Year	Number
1996	76.8844223022461
1998	80
2000	79.6019897460938
2002	77.6119384765625
2003	78.6069641113281
2004	74.038459777832
2005	72.7272720336914
2006	81.8181838989258
2007	78.4689025878906
2008	72.1153869628906
2009	73.459716796875
2010	70.6161117553711
2011	76.5258178710938
2012	76.5258178710938
2013	76.9953079223633
2014	65.8653869628906
2015	79.523811340332
2016	79.523811340332
2017	79.523811340332
2018	80.9523773193359
2019	76.1904754638672
2020	74.7619018554688
2021	74.2857131958008
2022	81.6037750244141