Year	Number
1996	57.4468078613281
1998	61.7021293640137
2000	52.3809509277344
2002	44.4444427490234
2003	37.6884422302246
2004	43.2038841247559
2005	42.2330093383789
2006	39.613525390625
2007	38.164249420166
2008	39.9038467407227
2009	40.2843589782715
2010	44.0758285522461
2011	50.7108993530273
2012	49.7630348205566
2013	49.7630348205566
2014	55.7142868041992
2015	57.6190490722656
2016	56.1904754638672
2017	56.6666679382324
2018	53.7735862731934
2019	50.9433975219727
2020	50.4716987609863
2021	53.7735862731934
2022	56.6037750244141