Year	Number
2004-01-01	195.7088
2005-01-01	342.1974
2006-01-01	352.8465
2007-01-01	442.8896
2008-01-01	449.1489
2009-01-01	501.7172
2010-01-01	574.7403
2011-01-01	705.3671
2012-01-01	847.4526
2013-01-01	1015.8900
2014-01-01	1235.5756
2015-01-01	1361.1450
2016-01-01	1498.5144