Year	Number
2005-01-01	6486166
2006-01-01	7115085
2007-01-01	7840220
2008-01-01	8400849
2009-01-01	7615933
2010-01-01	7681735
2011-01-01	7955918
2012-01-01	7954309
2013-01-01	8280853
2014-01-01	8380249
2015-01-01	8538942