Year	Number
2007-01-01	1686195
2008-01-01	1782282
2009-01-01	1908527
2010-01-01	2404691
2011-01-01	2727652
2012-01-01	3138019
2013-01-01	3533065
2014-01-01	3847993
2015-01-01	4050074
2016-01-01	4248666
2017-01-01	4368210