Year	Number
2004-01-01	2285458
2005-01-01	658275
2007-01-01	1159804
2008-01-01	1490165
2009-01-01	1597152
2010-01-01	1659802
2011-01-01	1747988
2012-01-01	1801114
2013-01-01	1863207
2014-01-01	1918123
2015-01-01	1949306
2016-01-01	1965052