Year	Number
1996	84.9246215820313
1998	85
2000	81.592041015625
2002	79.6019897460938
2003	79.1044769287109
2004	79.8076934814453
2005	79.9043045043945
2006	77.511962890625
2007	80.8612442016602
2008	83.1730804443359
2009	83.8862533569336
2010	81.5165863037109
2011	82.6291046142578
2012	80.7511749267578
2013	81.2206573486328
2014	80.7692337036133
2015	80
2016	84.2857131958008
2017	81.4285736083984
2018	82.3809509277344
2019	82.8571395874023
2020	83.3333358764648
2021	82.3809509277344
2022	82.5471725463867