Year	Number
2007-01-01	2.7796
2008-01-01	10.7250
2009-01-01	40.4329
2010-01-01	69.3133
2011-01-01	88.6794
2012-01-01	135.1372
2013-01-01	198.7736
2014-01-01	217.3507
2015-01-01	252.9184
2016-01-01	291.5065