Year	Number
2005-01-01	14.2766
2006-01-01	26.0248
2007-01-01	40.1198
2008-01-01	53.0721
2009-01-01	60.0499
2010-01-01	64.1721
2011-01-01	66.1974
2012-01-01	69.5956
2013-01-01	71.5612
2014-01-01	70.9447
2015-01-01	76.0862
2016-01-01	77.7948
2017-01-01	80.9380