Year	Number
2006-01-01	1056785
2007-01-01	1224127
2008-01-01	1297550
2009-01-01	1203563
2010-01-01	1293699
2011-01-01	1329677
2012-01-01	3744022
2013-01-01	3708265
2014-01-01	3790047
2015-01-01	4130367
2016-01-01	4241964
2017-01-01	4273029