Year	Number
2004-01-01	22.2222
2005-01-01	22.2222
2006-01-01	22.2222
2007-01-01	27.7778
2008-01-01	33.3333
2009-01-01	33.3333
2010-01-01	33.3333
2011-01-01	38.8889
2012-01-01	38.8889
2013-01-01	38.8889
2014-01-01	38.8889
2015-01-01	38.8889
2016-01-01	38.8889