Year	Number
2004-01-01	13.0022
2005-01-01	14.9823
2006-01-01	19.8777
2007-01-01	27.4605
2008-01-01	34.3939
2009-01-01	37.6317
2010-01-01	42.5353
2011-01-01	44.6326
2012-01-01	46.9045
2013-01-01	46.2333
2014-01-01	47.5350
2015-01-01	46.0714
2016-01-01	45.7035