Year	Number
1996	62.3115577697754
1998	64
2000	63.1840782165527
2002	60.1990051269531
2003	61.1940307617188
2004	58.6538467407227
2005	57.8947372436523
2006	62.6794242858887
2007	57.8947372436523
2008	58.6538467407227
2009	60.6635055541992
2010	62.0853080749512
2011	62.4413146972656
2012	61.5023460388184
2013	62.4413146972656
2014	66.3461532592773
2015	62.8571434020996
2016	60.9523811340332
2017	57.1428565979004
2018	54.2857131958008
2019	54.2857131958008
2020	53.8095245361328
2021	60
2022	57.0754699707031