Year	Number
2004-01-01	11474
2005-01-01	28294
2006-01-01	44255
2007-01-01	93208
2008-01-01	110390
2009-01-01	70193
2010-01-01	85201
2011-01-01	102623
2012-01-01	126584
2013-01-01	173955