Year	Number
2004-01-01	4190071
2005-01-01	5734090
2006-01-01	7070741
2007-01-01	7571992
2008-01-01	7838163
2009-01-01	8160924
2010-01-01	8556022
2011-01-01	8633604
2012-01-01	8637222
2013-01-01	8861765
2014-01-01	8975458
2015-01-01	9188206
2016-01-01	9304184