Year	Number
2008-01-01	25.2920
2009-01-01	28.1704
2010-01-01	29.7388
2011-01-01	30.2046
2012-01-01	35.4486
2013-01-01	37.7486
2014-01-01	42.5887
2015-01-01	48.2943