Year	Number
2004-01-01	119.3038
2005-01-01	138.4184
2006-01-01	143.3943
2007-01-01	150.7905
2008-01-01	176.4479
2009-01-01	192.3109
2010-01-01	199.5815
2011-01-01	216.5182
2012-01-01	221.6470
2013-01-01	215.7773
2014-01-01	220.3884
2015-01-01	220.9475
2016-01-01	221.5985