Year	Number
2004-01-01	55803280
2005-01-01	61309636
2006-01-01	66956511
2007-01-01	71984692
2008-01-01	73935873
2009-01-01	74615620
2010-01-01	77463996
2011-01-01	75820101
2012-01-01	79941680
2013-01-01	82212239
2014-01-01	84139675
2015-01-01	85963154
2016-01-01	87857511