Year	Number
2004-01-01	2588414
2005-01-01	2594142
2006-01-01	2595030
2007-01-01	2600261
2008-01-01	2625759
2009-01-01	2726578
2010-01-01	2816952
2011-01-01	3524571
2012-01-01	3877028