Year	Number
2004-01-01	88372
2005-01-01	24977
2006-01-01	17772
2007-01-01	34644
2008-01-01	20095
2009-01-01	37267
2010-01-01	39597
2011-01-01	30924
2012-01-01	41683
2013-01-01	59228