Year	Number
2004-01-01	2540819
2005-01-01	2546285
2006-01-01	2546900
2007-01-01	2555238
2008-01-01	2580283
2009-01-01	2672819
2010-01-01	2774961
2011-01-01	3477309
2012-01-01	3825048