Year	Number
2004-01-01	67975
2005-01-01	70368
2006-01-01	72874
2007-01-01	75868
2008-01-01	77964
2009-01-01	80962
2010-01-01	80954
2011-01-01	81365
2012-01-01	81798
2013-01-01	79667
2014-01-01	77608
2015-01-01	80331
2016-01-01	80389