Year	Number
1996	83.4170837402344
1998	71.5
2000	80.0995025634766
2002	70.1492538452148
2003	71.6417922973633
2004	77.4038467407227
2005	73.2057418823242
2006	75.1196136474609
2007	76.5550231933594
2008	77.4038467407227
2009	68.2464447021484
2010	66.8246459960938
2011	65.7276992797852
2012	63.8497657775879
2013	64.7887344360352
2014	66.3461532592773
2015	62.8571434020996
2016	57.6190490722656
2017	55.238094329834
2018	57.1428565979004
2019	57.6190490722656
2020	60
2021	60.476188659668
2022	59.9056587219238