Year	Number
1996	78.391960144043
1998	81.5
2000	70.1492538452148
2002	70.6467666625977
2003	66.6666641235352
2004	59.6153831481934
2005	57.8947372436523
2006	55.0239219665527
2007	56.9377975463867
2008	56.25
2009	57.3459701538086
2010	56.8720397949219
2011	57.2769966125488
2012	58.2159614562988
2013	55.3990592956543
2014	62.5
2015	60.476188659668
2016	57.1428565979004
2017	58.5714302062988
2018	56.1904754638672
2019	56.1904754638672
2020	54.761905670166
2021	55.238094329834
2022	55.1886787414551