Year	Number
1996	83.606559753418
1998	81.420768737793
2000	77.5956268310547
2002	80
2003	75.6756744384766
2004	78.1094512939453
2005	75
2006	76.0975646972656
2007	74.271842956543
2008	75.2427215576172
2009	74.6411514282227
2010	74.6411514282227
2011	74.8815155029297
2012	75.3554534912109
2013	75.8293838500977
2014	75.961540222168
2015	80
2016	82.8571395874023
2017	83.8095245361328
2018	82.3809509277344
2019	82.3809509277344
2020	80
2021	80.476188659668
2022	75