Year	Number
2004-01-01	1314814
2005-01-01	1479104
2006-01-01	1729269
2007-01-01	2097153
2008-01-01	2521873
2009-01-01	2332071
2010-01-01	2492842
2011-01-01	2760282
2012-01-01	3104297
2013-01-01	3360500
2014-01-01	3492230
2015-01-01	3466852
2016-01-01	3444565
2017-01-01	3436779