Year	Number
2006-01-01	11.6482
2007-01-01	13.1868
2008-01-01	14.4214
2009-01-01	15.8533
2010-01-01	17.8177
2011-01-01	20.1182
2012-01-01	22.5662
2013-01-01	25.1880
2014-01-01	28.0119
2015-01-01	30.8350
2016-01-01	34.0441