Year	Number
2007-01-01	5470349
2008-01-01	62740790
2009-01-01	193500400
2010-01-01	311046200
2011-01-01	432998200
2012-01-01	575344427
2013-01-01	732609483
2014-01-01	911335100
2015-01-01	1114176700
2016-01-01	1526151000