Year	Number
1996	57.7889442443848
1998	58.5
2000	52.7363166809082
2002	57.7114410400391
2003	57.7114410400391
2004	57.211540222168
2005	57.4162673950195
2006	55.9808616638184
2007	56.4593315124512
2008	56.25
2009	58.7677726745605
2010	60.6635055541992
2011	61.5023460388184
2012	55.8685455322266
2013	54.4600944519043
2014	62.5
2015	59.523811340332
2016	60.9523811340332
2017	60
2018	56.1904754638672
2019	54.2857131958008
2020	53.3333320617676
2021	52.3809509277344
2022	50.9433975219727