Year	Number
2004-01-01	0.0000
2005-01-01	0.0000
2006-01-01	0.0000
2007-01-01	0.0000
2008-01-01	0.0000
2009-01-01	0.0000
2010-01-01	0.0000
2011-01-01	19.7917
2012-01-01	22.9167
2013-01-01	22.9167
2014-01-01	27.0833
2015-01-01	30.2083
2016-01-01	28.1250
2017-01-01	33.3333