Year	Number
2004-01-01	577229
2005-01-01	648538
2006-01-01	409324
2007-01-01	589235
2008-01-01	651379
2009-01-01	656076
2010-01-01	681862
2011-01-01	745635
2012-01-01	775893
2013-01-01	821841
2014-01-01	888362
2015-01-01	973802
2016-01-01	1030602