Identifier: 001572509
Date of last update: April 25, 2013
| Month | Year | Value (in thousands) |
|---|---|---|
| March | 2013 | 168.2 |
| February | 2013 | 152.8 |
| January | 2013 | 163.9 |
| December | 2012 | 169.9 |
| November | 2012 | 181.9 |
| October | 2012 | 260.0 |
| September | 2012 | 215.1 |
| August | 2012 | 180.8 |
| July | 2012 | 258.7 |
| June | 2012 | 260.2 |
| May | 2012 | 204.4 |
| April | 2012 | 207.3 |
| March | 2012 | 224.9 |
| February | 2012 | 196.3 |
| January | 2012 | 205.8 |
| December | 2011 | 231.2 |
| November | 2011 | 258.0 |
| October | 2011 | 267.9 |
| September | 2011 | 307.2 |
| August | 2011 | 236.0 |
| July | 2011 | 270.7 |
| June | 2011 | 259.7 |
| May | 2011 | 273.8 |
| April | 2011 | 224.4 |
| March | 2011 | 250.7 |
| February | 2011 | 200.6 |
| January | 2011 | 194.6 |
| December | 2010 | 219.1 |
| November | 2010 | 224.9 |
| October | 2010 | 275.8 |
| September | 2010 | 277.0 |
| August | 2010 | 204.7 |
| July | 2010 | 275.7 |
| June | 2010 | 280.1 |
| May | 2010 | 223.6 |
| April | 2010 | 223.2 |
| March | 2010 | 244.1 |
| February | 2010 | 189.3 |
| January | 2010 | 186.1 |
| December | 2009 | 215.6 |
| November | 2009 | 230.3 |
| October | 2009 | 272.0 |
| September | 2009 | 287.6 |
| August | 2009 | 183.9 |
| July | 2009 | 270.1 |
| June | 2009 | 266.4 |
| May | 2009 | 184.3 |
| April | 2009 | 204.1 |
| March | 2009 | 203.1 |
| February | 2009 | 172.1 |
| January | 2009 | 172.7 |
| December | 2008 | 240.2 |
| November | 2008 | 247.3 |
| October | 2008 | 340.6 |
| September | 2008 | 336.0 |
| August | 2008 | 209.8 |
| July | 2008 | 334.3 |
| June | 2008 | 333.8 |
| May | 2008 | 269.7 |
| April | 2008 | 285.6 |
| March | 2008 | 247.0 |
| February | 2008 | 239.4 |
| January | 2008 | 248.1 |
| December | 2007 | 264.5 |
| November | 2007 | 280.6 |
| October | 2007 | 347.0 |
| September | 2007 | 301.0 |
| August | 2007 | 239.6 |
| July | 2007 | 333.3 |
| June | 2007 | 326.6 |
| May | 2007 | 269.7 |
| April | 2007 | 244.6 |
| March | 2007 | 252.5 |
| February | 2007 | 218.6 |
| January | 2007 | 227.7 |
| December | 2006 | 238.4 |
| November | 2006 | 267.9 |
| October | 2006 | 311.5 |
| September | 2006 | 292.6 |
| August | 2006 | 229.0 |
| July | 2006 | 284.0 |
| June | 2006 | 309.3 |
| May | 2006 | 253.3 |
| April | 2006 | 216.2 |
| March | 2006 | 245.5 |
| February | 2006 | 200.7 |
| January | 2006 | 228.8 |
| December | 2005 | 253.1 |
| November | 2005 | 269.7 |
| October | 2005 | 286.4 |
| September | 2005 | 301.6 |
| August | 2005 | 224.1 |
| July | 2005 | 277.2 |
| June | 2005 | 301.6 |
| May | 2005 | 245.7 |
| April | 2005 | 233.7 |
| March | 2005 | 231.8 |
| February | 2005 | 188.7 |
| January | 2005 | 191.0 |
| December | 2004 | 225.4 |
| November | 2004 | 239.5 |
| October | 2004 | 250.6 |
| September | 2004 | 288.1 |
| August | 2004 | 194.5 |
| July | 2004 | 271.2 |
| June | 2004 | 291.6 |
| May | 2004 | 209.8 |
| April | 2004 | 216.5 |
| March | 2004 | 218.5 |
| February | 2004 | 174.2 |
| January | 2004 | 182.8 |
| December | 2003 | 212.3 |
| November | 2003 | 194.8 |
| October | 2003 | 255.1 |
| September | 2003 | 258.8 |
| August | 2003 | 175.9 |
| July | 2003 | 277.4 |
| June | 2003 | 236.6 |
| May | 2003 | 184.2 |
| April | 2003 | 197.0 |
| March | 2003 | 183.0 |
| February | 2003 | 165.4 |
| January | 2003 | 184.7 |
| December | 2002 | 193.0 |
| November | 2002 | 199.6 |
| October | 2002 | 264.7 |
| September | 2002 | 244.2 |
| August | 2002 | 166.3 |
| July | 2002 | 281.8 |
| June | 2002 | 235.6 |
| May | 2002 | 201.0 |
| April | 2002 | 208.4 |
| March | 2002 | 199.3 |
| February | 2002 | 167.7 |
| January | 2002 | 188.1 |
| December | 2001 | 191.3 |
| November | 2001 | 228.3 |
| October | 2001 | 288.0 |
| September | 2001 | 235.7 |
| August | 2001 | 189.9 |
| July | 2001 | 262.5 |
| June | 2001 | 234.3 |
| May | 2001 | 211.8 |
| April | 2001 | 192.6 |
| March | 2001 | 220.4 |
| February | 2001 | 186.4 |
| January | 2001 | 204.0 |
| December | 2000 | 195.2 |
| November | 2000 | 235.9 |
| October | 2000 | 274.4 |
| September | 2000 | 286.9 |
| August | 2000 | 201.8 |
| July | 2000 | 255.9 |
| June | 2000 | 247.8 |
| May | 2000 | 238.9 |
| April | 2000 | 196.9 |
| March | 2000 | 227.2 |
| February | 2000 | 199.1 |
| January | 2000 | 200.4 |
| December | 1999 | 198.1 |
| November | 1999 | 219.0 |
| October | 1999 | 253.9 |
| September | 1999 | 269.5 |
| August | 1999 | 196.4 |
| July | 1999 | 256.8 |
| June | 1999 | 270.4 |
| May | 1999 | 199.5 |
| April | 1999 | 199.8 |
| March | 1999 | 215.3 |
| February | 1999 | 177.9 |
| January | 1999 | 175.3 |
| December | 1998 | 173.5 |
| November | 1998 | 188.6 |
| October | 1998 | 233.3 |
| September | 1998 | 250.1 |
| August | 1998 | 170.8 |
| July | 1998 | 241.7 |
| June | 1998 | 248.2 |
| May | 1998 | 182.9 |
| April | 1998 | 200.9 |
| March | 1998 | 194.1 |
| February | 1998 | 165.4 |
| January | 1998 | 176.9 |
| December | 1997 | 181.3 |
| November | 1997 | 168.7 |
| October | 1997 | 226.0 |
| September | 1997 | 235.7 |
| August | 1997 | 159.4 |
| July | 1997 | 225.6 |
| June | 1997 | 218.7 |
| May | 1997 | 174.0 |
| April | 1997 | 193.7 |
| March | 1997 | 161.3 |
| February | 1997 | 145.1 |
| January | 1997 | 152.8 |
| December | 1996 | 148.4 |
| November | 1996 | 152.9 |
| October | 1996 | 209.6 |
| September | 1996 | 208.9 |
| August | 1996 | 149.7 |
| July | 1996 | 215.1 |
| June | 1996 | 188.8 |
| May | 1996 | 163.2 |
| April | 1996 | 166.3 |
| March | 1996 | 155.7 |
| February | 1996 | 141.1 |
| January | 1996 | 141.5 |
| December | 1995 | 119.2 |