Year	Number
2004-01-01	1194469
2005-01-01	1349661
2006-01-01	1596763
2007-01-01	1948874
2008-01-01	2333335
2009-01-01	2168944
2010-01-01	2330210
2011-01-01	2588900
2012-01-01	2921855
2013-01-01	3172634
2014-01-01	3318167
2015-01-01	3300739
2016-01-01	3278854
2017-01-01	3267265