Year	Number
2004-01-01	11078926
2005-01-01	11381435
2006-01-01	11464037
2007-01-01	13026197
2008-01-01	14130360
2009-01-01	14767555
2010-01-01	15452827
2011-01-01	16429738
2012-01-01	17240653
2013-01-01	18586911
2014-01-01	19999951