Year	Number
2004-01-01	34545
2005-01-01	36967
2006-01-01	37946
2007-01-01	39630
2008-01-01	41157
2009-01-01	43982
2010-01-01	59290
2011-01-01	61207
2012-01-01	63494
2013-01-01	68930
2014-01-01	81974
2015-01-01	103282
2016-01-01	123811