Year	Number
2004-01-01	216906
2005-01-01	243852
2006-01-01	269513
2007-01-01	310843
2008-01-01	429426
2009-01-01	422183
2010-01-01	356026
2011-01-01	479643
2012-01-01	521340
2013-01-01	542221
2014-01-01	572317
2015-01-01	646471
2016-01-01	675843