Year	Number
2004-01-01	56.5217
2005-01-01	54.3478
2006-01-01	56.5217
2007-01-01	56.5217
2008-01-01	67.3913
2009-01-01	67.3913
2010-01-01	69.5652
2011-01-01	69.5652
2012-01-01	71.7391
2013-01-01	73.9130
2014-01-01	82.6087
2015-01-01	84.7826
2016-01-01	84.7826