Year	Number
2005-01-01	3418995
2006-01-01	3897311
2007-01-01	4031869
2008-01-01	4979894
2009-01-01	4203181
2010-01-01	4229132
2011-01-01	4375081
2012-01-01	4266129
2013-01-01	4486685
2014-01-01	4538474
2015-01-01	4618825