Year	Number
2004-01-01	313226
2005-01-01	364515
2006-01-01	180550
2007-01-01	217931
2008-01-01	297088
2009-01-01	408844
2010-01-01	512793
2011-01-01	585862
2012-01-01	770679
2013-01-01	849315
2014-01-01	1248428
2015-01-01	1407568
2016-01-01	1390499