Year	Number
2004-01-01	7710
2005-01-01	9196
2006-01-01	9775
2007-01-01	9113
2008-01-01	9818
2009-01-01	10704
2010-01-01	20882
2011-01-01	23784
2012-01-01	50301
2013-01-01	56420
2014-01-01	61145
2015-01-01	78074