Year	Number
2004-01-01	34555
2005-01-01	36985
2006-01-01	38029
2007-01-01	39949
2008-01-01	41506
2009-01-01	44600
2010-01-01	60098
2011-01-01	61598
2012-01-01	64095
2013-01-01	75963
2014-01-01	87758
2015-01-01	108462
2016-01-01	138668