Year	Number
2006-01-01	9.6094
2007-01-01	12.7930
2008-01-01	17.5977
2009-01-01	26.4648
2010-01-01	21.4453
2011-01-01	23.4766
2012-01-01	25.0781
2013-01-01	26.7188
2014-01-01	27.8516
2015-01-01	29.4727
2016-01-01	29.5313
2017-01-01	30.0586