Year	Number
2004	0.7609001994133
2005	1.15323007106781
2006	0.782868325710297
2007	0.744717001914978
2008	0.746175408363342
2009	0.743839979171753
2010	0.767428874969482
2011	0.784417808055878
2012	0.800454020500183
2013	0.78344589471817