Year	Number
2004-01-01	1
2005-01-01	7
2006-01-01	14
2007-01-01	37
2008-01-01	60
2009-01-01	80
2010-01-01	93
2011-01-01	84
2012-01-01	76
2013-01-01	72
2014-01-01	71
2015-01-01	70
2016-01-01	76