Year	Number
2005-01-01	35.9021
2006-01-01	34.6638
2007-01-01	48.6320
2008-01-01	64.3617
2009-01-01	65.4805
2010-01-01	73.5682
2011-01-01	73.0715
2012-01-01	73.9420
2013-01-01	83.3822
2014-01-01	94.4339
2015-01-01	97.3452