Year	Number
2004-01-01	12305
2005-01-01	16485
2006-01-01	186366
2007-01-01	423935
2008-01-01	627387
2009-01-01	767072
2010-01-01	820954
2011-01-01	879425
2012-01-01	964612
2013-01-01	1035042
2014-01-01	926208