Year	Number
2005-01-01	9.5701
2006-01-01	15.4128
2007-01-01	23.7137
2008-01-01	28.5159
2009-01-01	31.1342
2010-01-01	32.6664
2011-01-01	32.3576
2012-01-01	31.8431
2013-01-01	30.5625
2014-01-01	30.0938
2015-01-01	30.9284
2016-01-01	34.1070
2017-01-01	30.6997