Year	Number
2004-01-01	776073
2005-01-01	1235224
2006-01-01	1618322
2007-01-01	1809907
2008-01-01	2229366
2009-01-01	2364760
2010-01-01	2568979
2011-01-01	2879353
2012-01-01	3789815
2013-01-01	3826020
2014-01-01	4657193
2015-01-01	4800448
2016-01-01	5421292