Year	Number
2004-01-01	318549
2005-01-01	339921
2006-01-01	447118
2007-01-01	583717
2008-01-01	681109
2009-01-01	818715
2010-01-01	984328
2011-01-01	1125807
2012-01-01	1343322
2013-01-01	1447755
2014-01-01	1618497
2015-01-01	1679053
2016-01-01	1737822