Year	Number
2004-01-01	26
2005-01-01	28
2006-01-01	34
2007-01-01	42
2008-01-01	52
2009-01-01	55
2010-01-01	72
2011-01-01	73
2012-01-01	73
2013-01-01	80
2014-01-01	81
2015-01-01	85
2016-01-01	78