Year	Number
2007-01-01	7.3632
2008-01-01	27.6164
2009-01-01	101.1148
2010-01-01	168.0822
2011-01-01	208.3905
2012-01-01	307.2046
2013-01-01	436.7049
2014-01-01	461.5725
2015-01-01	519.5390
2016-01-01	579.1276