Year	Number
1996	21.8579235076904
1998	33.3333320617676
2000	38.2513656616211
2002	47.5675659179688
2003	45.4054069519043
2004	57.7114410400391
2005	53.4313735961914
2006	57.5609741210938
2007	55.3398056030273
2008	57.7669906616211
2009	62.6794242858887
2010	62.6794242858887
2011	61.6113739013672
2012	60.6635055541992
2013	60.1895751953125
2014	67.788459777832
2015	66.6666641235352
2016	65.7142868041992
2017	67.6190490722656
2018	68.0952377319336
2019	66.1904754638672
2020	65.7142868041992
2021	67.6190490722656
2022	68.3962249755859