Year	Number
2005-01-01	4.3955
2006-01-01	8.3654
2007-01-01	13.7292
2008-01-01	17.9086
2009-01-01	23.0353
2010-01-01	30.0185
2011-01-01	35.6531
2012-01-01	45.4501
2013-01-01	50.8929
2014-01-01	56.3276
2015-01-01	66.6090
2016-01-01	71.6861
2017-01-01	77.3166