Year	Number
1996	88.4422073364258
1998	83
2000	83.5820922851563
2002	83.5820922851563
2003	80.0995025634766
2004	75.4807662963867
2005	73.684211730957
2006	77.0334930419922
2007	72.7272720336914
2008	74.038459777832
2009	73.9336471557617
2010	79.1469192504883
2011	80.7511749267578
2012	77.9342727661133
2013	80.2816925048828
2014	83.6538467407227
2015	84.2857131958008
2016	82.3809509277344
2017	80.9523773193359
2018	79.523811340332
2019	81.4285736083984
2020	80.476188659668
2021	81.4285736083984
2022	81.1320724487305