Year	Number
2004	56.25
2005	64.9038467407227
2006	46.1538467407227
2007	45.1923065185547
2008	44.711540222168
2009	45.0236968994141
2010	48.8151664733887
2011	50.7042236328125
2012	53.051643371582
2013	49.7652587890625