Year	Number
2004-01-01	1686.5685
2005-01-01	1732.6875
2006-01-01	1802.8768
2007-01-01	1851.9926
2008-01-01	1875.7102
2009-01-01	1821.1808
2010-01-01	1732.0495
2011-01-01	1562.8182
2012-01-01	1478.9724
2013-01-01	1358.4262
2014-01-01	1283.3206
2015-01-01	1252.3734
2016-01-01	1259.7928