Identifier: 001572426
Date of last update: April 25, 2013
| Month | Year | Value (in thousands) |
|---|---|---|
| March | 2013 | 214.8 |
| February | 2013 | 228.6 |
| January | 2013 | 216.7 |
| December | 2012 | 242.2 |
| November | 2012 | 236.9 |
| October | 2012 | 242.0 |
| September | 2012 | 238.3 |
| August | 2012 | 248.0 |
| July | 2012 | 246.6 |
| June | 2012 | 257.4 |
| May | 2012 | 254.2 |
| April | 2012 | 253.1 |
| March | 2012 | 263.7 |
| February | 2012 | 265.0 |
| January | 2012 | 269.7 |
| December | 2011 | 272.3 |
| November | 2011 | 289.4 |
| October | 2011 | 275.7 |
| September | 2011 | 286.3 |
| August | 2011 | 295.1 |
| July | 2011 | 285.4 |
| June | 2011 | 283.9 |
| May | 2011 | 287.9 |
| April | 2011 | 286.3 |
| March | 2011 | 284.1 |
| February | 2011 | 290.8 |
| January | 2011 | 284.0 |
| December | 2010 | 268.0 |
| November | 2010 | 270.8 |
| October | 2010 | 275.8 |
| September | 2010 | 273.8 |
| August | 2010 | 268.3 |
| July | 2010 | 276.4 |
| June | 2010 | 270.9 |
| May | 2010 | 271.9 |
| April | 2010 | 278.8 |
| March | 2010 | 273.5 |
| February | 2010 | 263.0 |
| January | 2010 | 270.9 |
| December | 2009 | 262.5 |
| November | 2009 | 265.9 |
| October | 2009 | 255.2 |
| September | 2009 | 252.9 |
| August | 2009 | 245.6 |
| July | 2009 | 248.9 |
| June | 2009 | 248.4 |
| May | 2009 | 235.9 |
| April | 2009 | 236.7 |
| March | 2009 | 233.9 |
| February | 2009 | 231.3 |
| January | 2009 | 238.8 |
| December | 2008 | 259.3 |
| November | 2008 | 265.6 |
| October | 2008 | 281.3 |
| September | 2008 | 298.2 |
| August | 2008 | 295.3 |
| July | 2008 | 305.1 |
| June | 2008 | 300.3 |
| May | 2008 | 311.4 |
| April | 2008 | 311.9 |
| March | 2008 | 314.8 |
| February | 2008 | 313.8 |
| January | 2008 | 312.3 |
| December | 2007 | 315.4 |
| November | 2007 | 304.2 |
| October | 2007 | 310.9 |
| September | 2007 | 306.9 |
| August | 2007 | 309.9 |
| July | 2007 | 310.5 |
| June | 2007 | 310.9 |
| May | 2007 | 309.0 |
| April | 2007 | 304.7 |
| March | 2007 | 303.3 |
| February | 2007 | 313.8 |
| January | 2007 | 296.0 |
| December | 2006 | 301.7 |
| November | 2006 | 296.8 |
| October | 2006 | 289.4 |
| September | 2006 | 294.2 |
| August | 2006 | 283.5 |
| July | 2006 | 285.7 |
| June | 2006 | 295.5 |
| May | 2006 | 284.7 |
| April | 2006 | 283.2 |
| March | 2006 | 287.7 |
| February | 2006 | 282.5 |
| January | 2006 | 291.0 |
| December | 2005 | 289.5 |
| November | 2005 | 297.2 |
| October | 2005 | 286.6 |
| September | 2005 | 283.5 |
| August | 2005 | 283.6 |
| July | 2005 | 278.4 |
| June | 2005 | 276.0 |
| May | 2005 | 282.2 |
| April | 2005 | 277.5 |
| March | 2005 | 280.0 |
| February | 2005 | 269.0 |
| January | 2005 | 277.1 |
| December | 2004 | 256.7 |
| November | 2004 | 269.4 |
| October | 2004 | 259.4 |
| September | 2004 | 256.1 |
| August | 2004 | 259.4 |
| July | 2004 | 259.1 |
| June | 2004 | 264.1 |
| May | 2004 | 262.0 |
| April | 2004 | 264.8 |
| March | 2004 | 259.9 |
| February | 2004 | 260.8 |
| January | 2004 | 257.5 |
| December | 2003 | 256.2 |
| November | 2003 | 246.5 |
| October | 2003 | 249.8 |
| September | 2003 | 245.2 |
| August | 2003 | 252.6 |
| July | 2003 | 262.0 |
| June | 2003 | 253.0 |
| May | 2003 | 236.2 |
| April | 2003 | 244.8 |
| March | 2003 | 254.6 |
| February | 2003 | 248.1 |
| January | 2003 | 245.0 |
| December | 2002 | 247.4 |
| November | 2002 | 246.7 |
| October | 2002 | 246.4 |
| September | 2002 | 254.1 |
| August | 2002 | 250.2 |
| July | 2002 | 254.0 |
| June | 2002 | 247.2 |
| May | 2002 | 254.8 |
| April | 2002 | 261.3 |
| March | 2002 | 262.3 |
| February | 2002 | 249.6 |
| January | 2002 | 246.6 |
| December | 2001 | 259.5 |
| November | 2001 | 262.7 |
| October | 2001 | 261.9 |
| September | 2001 | 252.2 |
| August | 2001 | 259.5 |
| July | 2001 | 252.7 |
| June | 2001 | 253.4 |
| May | 2001 | 257.5 |
| April | 2001 | 249.0 |
| March | 2001 | 257.5 |
| February | 2001 | 261.8 |
| January | 2001 | 265.3 |
| December | 2000 | 263.3 |
| November | 2000 | 264.2 |
| October | 2000 | 270.7 |
| September | 2000 | 267.5 |
| August | 2000 | 271.3 |
| July | 2000 | 264.8 |
| June | 2000 | 266.6 |
| May | 2000 | 278.9 |
| April | 2000 | 268.5 |
| March | 2000 | 271.8 |
| February | 2000 | 272.8 |
| January | 2000 | 280.8 |
| December | 1999 | 252.1 |
| November | 1999 | 262.7 |
| October | 1999 | 260.6 |
| September | 1999 | 261.4 |
| August | 1999 | 255.0 |
| July | 1999 | 253.9 |
| June | 1999 | 257.9 |
| May | 1999 | 247.9 |
| April | 1999 | 245.0 |
| March | 1999 | 238.9 |
| February | 1999 | 235.4 |
| January | 1999 | 248.9 |
| December | 1998 | 228.9 |
| November | 1998 | 232.0 |
| October | 1998 | 226.2 |
| September | 1998 | 231.6 |
| August | 1998 | 232.6 |
| July | 1998 | 233.1 |
| June | 1998 | 232.8 |
| May | 1998 | 230.7 |
| April | 1998 | 237.3 |
| March | 1998 | 228.9 |
| February | 1998 | 234.6 |
| January | 1998 | 233.2 |
| December | 1997 | 234.5 |
| November | 1997 | 232.7 |
| October | 1997 | 230.2 |
| September | 1997 | 217.9 |
| August | 1997 | 214.2 |
| July | 1997 | 217.8 |
| June | 1997 | 210.8 |
| May | 1997 | 209.5 |
| April | 1997 | 211.0 |
| March | 1997 | 207.1 |
| February | 1997 | 195.7 |
| January | 1997 | 197.0 |
| December | 1996 | 208.4 |
| November | 1996 | 198.2 |
| October | 1996 | 201.7 |
| September | 1996 | 197.6 |
| August | 1996 | 199.9 |
| July | 1996 | 191.9 |
| June | 1996 | 192.0 |
| May | 1996 | 188.2 |
| April | 1996 | 184.1 |
| March | 1996 | 182.0 |
| February | 1996 | 179.3 |
| January | 1996 | 176.3 |