Year	Number
1996	70.4918060302734
1998	69.3989105224609
2000	65.0273208618164
2002	65.405403137207
2003	64.3243255615234
2004	62.6865653991699
2005	61.764705657959
2006	56.0975608825684
2007	50.970874786377
2008	53.3980598449707
2009	56.9377975463867
2010	59.3301429748535
2011	56.8720397949219
2012	59.2417068481445
2013	60.6635055541992
2014	57.6923065185547
2015	58.5714302062988
2016	61.4285697937012
2017	59.523811340332
2018	53.8095245361328
2019	56.6666679382324
2020	51.4285697937012
2021	50.476188659668
2022	55.6603775024414