Identifier: 001582871
Date of last update: April 30, 2013
| Month | Year | Value |
|---|---|---|
| March | 2013 | 30,169 |
| February | 2013 | 24,414 |
| January | 2013 | 26,406 |
| December | 2012 | 34,393 |
| November | 2012 | 30,328 |
| October | 2012 | 28,105 |
| September | 2012 | 28,099 |
| August | 2012 | 19,141 |
| July | 2012 | 26,655 |
| June | 2012 | 28,592 |
| May | 2012 | 23,903 |
| April | 2012 | 25,205 |
| March | 2012 | 30,066 |
| February | 2012 | 27,906 |
| January | 2012 | 33,884 |
| December | 2011 | 47,784 |
| November | 2011 | 44,063 |
| October | 2011 | 37,492 |
| September | 2011 | 29,310 |
| August | 2011 | 25,677 |
| July | 2011 | 31,434 |
| June | 2011 | 20,745 |
| May | 2011 | 30,894 |
| April | 2011 | 31,831 |
| March | 2011 | 30,932 |
| February | 2011 | 40,950 |
| January | 2011 | 29,070 |
| December | 2010 | 32,559 |
| November | 2010 | 33,341 |
| October | 2010 | 34,663 |
| September | 2010 | 27,035 |
| August | 2010 | 21,823 |
| July | 2010 | 30,684 |
| June | 2010 | 22,340 |
| May | 2010 | 27,015 |
| April | 2010 | 27,806 |
| March | 2010 | 33,446 |
| February | 2010 | 21,550 |
| January | 2010 | 20,658 |
| December | 2009 | 24,176 |
| November | 2009 | 28,158 |
| October | 2009 | 32,550 |
| September | 2009 | 26,767 |
| August | 2009 | 28,972 |
| July | 2009 | 26,690 |
| June | 2009 | 26,548 |
| May | 2009 | 26,781 |
| April | 2009 | 22,332 |
| March | 2009 | 26,164 |
| February | 2009 | 31,554 |
| January | 2009 | 22,122 |
| December | 2008 | 24,038 |
| November | 2008 | 36,785 |
| October | 2008 | 32,056 |
| September | 2008 | 30,859 |
| August | 2008 | 34,348 |
| July | 2008 | 48,935 |
| June | 2008 | 29,037 |
| May | 2008 | 35,049 |
| April | 2008 | 21,298 |
| March | 2008 | 32,398 |
| February | 2008 | 30,073 |
| January | 2008 | 30,871 |
| December | 2007 | 34,091 |
| November | 2007 | 34,407 |
| October | 2007 | 39,955 |
| September | 2007 | 41,097 |
| August | 2007 | 39,567 |
| July | 2007 | 41,383 |
| June | 2007 | 43,938 |
| May | 2007 | 41,442 |
| April | 2007 | 30,148 |
| March | 2007 | 40,685 |
| February | 2007 | 32,413 |
| January | 2007 | 32,539 |
| December | 2006 | 31,951 |
| November | 2006 | 39,363 |
| October | 2006 | 35,839 |
| September | 2006 | 41,576 |
| August | 2006 | 35,774 |
| July | 2006 | 32,178 |
| June | 2006 | 42,039 |
| May | 2006 | 36,573 |
| April | 2006 | 36,416 |
| March | 2006 | 39,741 |
| February | 2006 | 35,977 |
| January | 2006 | 38,026 |
| December | 2005 | 39,529 |
| November | 2005 | 41,090 |
| October | 2005 | 38,220 |
| September | 2005 | 38,356 |
| August | 2005 | 32,471 |
| July | 2005 | 35,115 |
| June | 2005 | 35,842 |
| May | 2005 | 34,765 |
| April | 2005 | 34,562 |
| March | 2005 | 31,424 |
| February | 2005 | 35,303 |
| January | 2005 | 35,764 |
| December | 2004 | 31,078 |
| November | 2004 | 33,424 |
| October | 2004 | 34,393 |
| September | 2004 | 35,920 |
| August | 2004 | 32,308 |
| July | 2004 | 30,501 |
| June | 2004 | 32,932 |
| May | 2004 | 31,198 |
| April | 2004 | 32,806 |
| March | 2004 | 29,203 |
| February | 2004 | 31,013 |
| January | 2004 | 30,671 |
| December | 2003 | 28,882 |
| November | 2003 | 30,002 |
| October | 2003 | 28,420 |
| September | 2003 | 28,803 |
| August | 2003 | 26,681 |
| July | 2003 | 26,757 |
| June | 2003 | 31,094 |
| May | 2003 | 23,946 |
| April | 2003 | 27,046 |
| March | 2003 | 27,596 |
| February | 2003 | 27,822 |
| January | 2003 | 26,571 |
| December | 2002 | 24,051 |
| November | 2002 | 28,281 |
| October | 2002 | 28,386 |
| September | 2002 | 28,113 |
| August | 2002 | 25,106 |
| July | 2002 | 26,911 |
| June | 2002 | 29,781 |
| May | 2002 | 26,522 |
| April | 2002 | 25,224 |
| March | 2002 | 24,923 |
| February | 2002 | 28,785 |
| January | 2002 | 26,170 |
| December | 2001 | 26,741 |
| November | 2001 | 29,186 |
| October | 2001 | 27,911 |
| September | 2001 | 29,982 |
| August | 2001 | 23,999 |
| July | 2001 | 27,056 |
| June | 2001 | 27,489 |
| May | 2001 | 30,445 |
| April | 2001 | 25,054 |
| March | 2001 | 28,272 |
| February | 2001 | 26,441 |
| January | 2001 | 25,640 |
| December | 2000 | 31,213 |
| November | 2000 | 30,482 |
| October | 2000 | 29,556 |
| September | 2000 | 28,925 |
| August | 2000 | 25,506 |
| July | 2000 | 27,540 |
| June | 2000 | 26,446 |
| May | 2000 | 26,253 |
| April | 2000 | 27,378 |
| March | 2000 | 32,122 |
| February | 2000 | 29,452 |
| January | 2000 | 22,736 |
| December | 1999 | 25,004 |
| November | 1999 | 26,269 |
| October | 1999 | 26,290 |
| September | 1999 | 25,684 |
| August | 1999 | 28,804 |
| July | 1999 | 33,604 |
| June | 1999 | 29,814 |
| May | 1999 | 26,015 |
| April | 1999 | 26,143 |
| March | 1999 | 26,883 |
| February | 1999 | 26,945 |
| January | 1999 | 35,022 |
| December | 1998 | 30,956 |
| November | 1998 | 30,276 |
| October | 1998 | 27,394 |
| September | 1998 | 24,710 |
| August | 1998 | 23,931 |
| July | 1998 | 23,450 |
| June | 1998 | 25,767 |
| May | 1998 | 21,153 |
| April | 1998 | 24,355 |
| March | 1998 | 27,000 |
| February | 1998 | 22,607 |
| January | 1998 | 24,165 |
| December | 1997 | 23,530 |
| November | 1997 | 23,910 |
| October | 1997 | 29,946 |
| September | 1997 | 22,865 |
| August | 1997 | 19,401 |
| July | 1997 | 22,792 |
| June | 1997 | 24,210 |
| May | 1997 | 22,628 |
| April | 1997 | 26,478 |
| March | 1997 | 23,697 |
| February | 1997 | 22,551 |
| January | 1997 | 22,015 |
| December | 1996 | 23,533 |
| November | 1996 | 22,231 |
| October | 1996 | 28,367 |
| September | 1996 | 21,791 |
| August | 1996 | 20,017 |
| July | 1996 | 25,099 |
| June | 1996 | 22,957 |
| May | 1996 | 20,863 |
| April | 1996 | 24,880 |
| March | 1996 | 24,816 |
| February | 1996 | 25,268 |
| January | 1996 | 26,085 |
| December | 1995 | 23,173 |
| November | 1995 | 23,813 |
| October | 1995 | 24,386 |
| September | 1995 | 25,510 |
| August | 1995 | 20,105 |
| July | 1995 | 24,076 |
| June | 1995 | 27,548 |
| May | 1995 | 22,986 |
| April | 1995 | 23,499 |
| March | 1995 | 28,121 |
| February | 1995 | 27,159 |
| January | 1995 | 27,752 |
| December | 1994 | 29,496 |
| November | 1994 | 29,648 |
| October | 1994 | 26,297 |
| September | 1994 | 24,530 |
| August | 1994 | 23,697 |
| July | 1994 | 24,886 |
| June | 1994 | 27,941 |
| May | 1994 | 24,339 |
| April | 1994 | 22,327 |
| March | 1994 | 29,062 |
| February | 1994 | 25,558 |
| January | 1994 | 26,750 |
| December | 1993 | 30,228 |
| November | 1993 | 23,850 |
| October | 1993 | 23,374 |
| September | 1993 | 25,481 |
| August | 1993 | 18,219 |
| July | 1993 | 20,250 |
| June | 1993 | 22,971 |
| May | 1993 | 17,865 |
| April | 1993 | 18,161 |
| March | 1993 | 26,210 |
| February | 1993 | 24,957 |
| January | 1993 | 20,020 |
| December | 1992 | 23,343 |
| November | 1992 | 26,294 |
| October | 1992 | 29,120 |
| September | 1992 | 22,512 |
| August | 1992 | 20,835 |
| July | 1992 | 18,501 |
| June | 1992 | 24,295 |
| May | 1992 | 21,116 |
| April | 1992 | 24,028 |
| March | 1992 | 28,595 |
| February | 1992 | 23,799 |
| January | 1992 | 27,443 |
| December | 1991 | 26,529 |
| November | 1991 | 25,960 |
| October | 1991 | 28,823 |
| September | 1991 | 25,971 |
| August | 1991 | 22,204 |
| July | 1991 | 27,289 |
| June | 1991 | 33,714 |
| May | 1991 | 19,577 |
| April | 1991 | 25,448 |
| March | 1991 | 24,671 |
| February | 1991 | 27,646 |
| January | 1991 | 29,080 |
| December | 1990 | 29,160 |
| November | 1990 | 28,695 |
| October | 1990 | 27,072 |
| September | 1990 | 27,663 |
| August | 1990 | 26,789 |
| July | 1990 | 26,625 |
| June | 1990 | 35,108 |
| May | 1990 | 21,513 |
| April | 1990 | 22,250 |
| March | 1990 | 26,643 |
| February | 1990 | 22,446 |
| January | 1990 | 26,944 |
| December | 1989 | 28,196 |
| November | 1989 | 30,923 |
| October | 1989 | 38,467 |
| September | 1989 | 28,862 |
| August | 1989 | 22,941 |
| July | 1989 | 28,034 |
| June | 1989 | 32,737 |
| May | 1989 | 25,506 |
| April | 1989 | 26,493 |
| March | 1989 | 27,308 |
| February | 1989 | 28,981 |
| January | 1989 | 27,401 |
| December | 1988 | 30,910 |
| November | 1988 | 25,978 |
| October | 1988 | 30,297 |
| September | 1988 | 29,997 |
| August | 1988 | 25,106 |
| July | 1988 | 26,828 |
| June | 1988 | 30,852 |
| May | 1988 | 26,599 |
| April | 1988 | 28,775 |
| March | 1988 | 31,142 |
| February | 1988 | 24,727 |
| January | 1988 | 27,892 |
| December | 1987 | 27,337 |
| November | 1987 | 30,382 |
| October | 1987 | 32,008 |
| September | 1987 | 24,934 |
| August | 1987 | 24,907 |
| July | 1987 | 24,570 |
| June | 1987 | 31,315 |
| May | 1987 | 24,344 |
| April | 1987 | 25,501 |
| March | 1987 | 26,636 |
| February | 1987 | 25,272 |
| January | 1987 | 24,195 |
| December | 1986 | 34,620 |
| November | 1986 | 26,224 |
| October | 1986 | 28,442 |
| September | 1986 | 29,467 |
| August | 1986 | 26,804 |
| July | 1986 | 32,096 |
| June | 1986 | 31,834 |
| May | 1986 | 22,239 |
| April | 1986 | 23,568 |
| March | 1986 | 24,304 |
| February | 1986 | 22,017 |
| January | 1986 | 19,752 |
| December | 1985 | 109,405 |
| November | 1985 | 138 |
| October | 1985 | 140 |
| September | 1985 | 86,641 |
| August | 1985 | 25 |
| July | 1985 | 89 |
| June | 1985 | 79,875 |
| May | 1985 | 71 |
| April | 1985 | 253 |
| March | 1985 | 66,805 |
| February | 1985 | 11 |
| January | 1985 | 85 |
| December | 1984 | 81,544 |
| November | 1984 | 1 |
| October | 1984 | 100 |
| September | 1984 | 66,692 |
| August | 1984 | 1 |
| July | 1984 | 23 |
| June | 1984 | 65,407 |
| May | 1984 | 3 |
| April | 1984 | 19 |
| March | 1984 | 70,249 |
| February | 1984 | 68 |
| January | 1984 | 41 |
| December | 1983 | 93,605 |
| November | 1983 | 3 |
| October | 1983 | 7 |
| September | 1983 | 77,095 |
| August | 1983 | 8 |
| July | 1983 | 4 |
| June | 1983 | 83,588 |
| May | 1983 | 30 |
| April | 1983 | 71 |
| March | 1983 | 85,493 |
| February | 1983 | 13 |
| January | 1983 | 1 |
| December | 1982 | 104,123 |
| November | 1982 | 94 |
| October | 1982 | 14 |
| September | 1982 | 76,781 |
| August | 1982 | 6 |
| July | 1982 | 64 |
| June | 1982 | 79,357 |
| May | 1982 | 1 |
| April | 1982 | 33 |
| March | 1982 | 30,088 |
| February | 1982 | 29,603 |
| January | 1982 | 26,463 |
| December | 1981 | 32,974 |
| November | 1981 | 32,583 |
| October | 1981 | 39,323 |
| September | 1981 | 33,206 |
| August | 1981 | 27,969 |
| July | 1981 | 32,817 |
| June | 1981 | 35,512 |
| May | 1981 | 33,590 |
| April | 1981 | 29,686 |
| March | 1981 | 36,823 |
| February | 1981 | 35,163 |
| January | 1981 | 30,837 |
| December | 1980 | 38,982 |
| November | 1980 | 34,777 |
| October | 1980 | 37,888 |
| September | 1980 | 35,321 |
| August | 1980 | 25,889 |
| July | 1980 | 30,441 |
| June | 1980 | 35,844 |
| May | 1980 | 29,982 |
| April | 1980 | 29,443 |
| March | 1980 | 37,371 |
| February | 1980 | 31,497 |
| January | 1980 | 28,952 |