Year	Number
2006-01-01	7.9936
2007-01-01	10.5255
2008-01-01	11.8360
2009-01-01	14.4524
2010-01-01	15.2605
2011-01-01	16.5696
2012-01-01	18.3440
2013-01-01	19.8100
2014-01-01	21.4812
2015-01-01	22.3610
2016-01-01	22.7112