Year	Number
2004-01-01	2212398
2005-01-01	708408
2007-01-01	1826819
2008-01-01	1960323
2009-01-01	2173403
2010-01-01	2296769
2011-01-01	2512951
2012-01-01	2594706
2013-01-01	2768625
2014-01-01	3048354
2015-01-01	3234668
2016-01-01	3108754