Year	Number
2005-01-01	11.2405
2006-01-01	11.6814
2007-01-01	16.9745
2008-01-01	21.6996
2009-01-01	21.3575
2010-01-01	24.1098
2011-01-01	24.4676
2012-01-01	37.8202
2013-01-01	39.8180
2014-01-01	44.1523
2015-01-01	47.9376
2016-01-01	50.1048