Year	Number
2004-01-01	1483922
2005-01-01	1805837
2006-01-01	2297762
2007-01-01	2673862
2008-01-01	2828130
2009-01-01	2964189
2010-01-01	2913038
2011-01-01	3105285
2012-01-01	3123796
2013-01-01	3279063
2014-01-01	3246803
2015-01-01	3205751
2016-01-01	3046677
2017-01-01	2981386