Year	Number
2007-01-01	815884
2008-01-01	933743
2009-01-01	1026239
2010-01-01	1148108
2011-01-01	985681
2012-01-01	1693248
2013-01-01	1919261
2014-01-01	2090068
2015-01-01	2353864
2016-01-01	3057614
2017-01-01	3356265