Year	Number
2004-01-01	15.0849
2005-01-01	15.7842
2006-01-01	15.9840
2007-01-01	16.8831
2008-01-01	17.4825
2009-01-01	18.1818
2010-01-01	18.3816
2011-01-01	21.6783
2012-01-01	21.6783
2013-01-01	30.9690
2014-01-01	33.3666
2015-01-01	34.4655
2016-01-01	40.1598