Year	Number
1996	77.8894500732422
1998	73.5
2000	56.2189064025879
2002	64.1791076660156
2003	63.1840782165527
2004	64.4230804443359
2005	66.0287094116211
2006	64.1148300170898
2007	49.2822952270508
2008	50.480770111084
2009	41.2322273254395
2010	44.0758285522461
2011	46.0093879699707
2012	46.948356628418
2013	45.0704231262207
2014	54.3269233703613
2015	58.5714302062988
2016	70.9523773193359
2017	70.476188659668
2018	77.1428604125977
2019	83.8095245361328
2020	75.2380981445313
2021	78.5714263916016
2022	78.7735824584961