Year	Number
2007-01-01	32.7494
2008-01-01	34.6876
2009-01-01	38.3900
2010-01-01	39.7450
2011-01-01	44.9596
2012-01-01	50.6791
2013-01-01	55.9247
2014-01-01	61.3382
2015-01-01	67.6821
2016-01-01	69.3326
2017-01-01	72.0387