Year	Number
2004-01-01	975017
2005-01-01	1131892
2006-01-01	1315135
2007-01-01	1549773
2008-01-01	1830476
2009-01-01	2191673
2010-01-01	2075010
2011-01-01	2244634
2012-01-01	2391637
2013-01-01	2563410
2014-01-01	1944294
2015-01-01	1960684