Year	Number
2005-01-01	30
2006-01-01	30
2007-01-01	60
2008-01-01	64
2009-01-01	67
2010-01-01	65
2011-01-01	64
2012-01-01	64
2013-01-01	60
2014-01-01	59
2015-01-01	59
2016-01-01	62
2017-01-01	67