Year	Number
2009-01-01	12.8561
2010-01-01	18.8079
2011-01-01	18.9419
2012-01-01	20.3956
2013-01-01	23.5233
2014-01-01	24.0914
2015-01-01	25.3746
2016-01-01	25.0290