Year	Number
2004-01-01	179944
2005-01-01	196765
2006-01-01	278561
2007-01-01	295645
2008-01-01	327987
2009-01-01	402247
2010-01-01	419384
2011-01-01	426224
2012-01-01	432614
2013-01-01	453054
2014-01-01	456197
2015-01-01	461036
2016-01-01	438081