Year	Number
2005-01-01	24.1632
2006-01-01	24.0150
2007-01-01	28.4000
2008-01-01	30.2560
2009-01-01	40.7288
2010-01-01	42.9802
2011-01-01	49.8042
2012-01-01	53.1058
2013-01-01	56.3241
2014-01-01	47.5911
2015-01-01	53.6392
2016-01-01	50.7574