Year	Number
2004-01-01	744859
2005-01-01	774973
2006-01-01	773420
2007-01-01	928849
2008-01-01	1031959
2009-01-01	1111529
2010-01-01	1065986
2011-01-01	1190956
2012-01-01	1386526
2013-01-01	1501898
2014-01-01	1569662
2015-01-01	1709068
2016-01-01	1593465