Year	Number
2004-01-01	11532267
2005-01-01	12569486
2006-01-01	7959669
2007-01-01	8187780
2008-01-01	8409677
2009-01-01	8579589
2010-01-01	9018744
2011-01-01	8366369
2012-01-01	8981281
2013-01-01	9463843
2014-01-01	9843972
2015-01-01	10181578
2016-01-01	10007630