Year	Number
1996	73.118278503418
1998	68.9839553833008
2000	68.0851058959961
2002	50.2645492553711
2003	53.9682540893555
2004	53.694580078125
2005	55.1219520568848
2006	57.073169708252
2007	56.3106803894043
2008	56.3106803894043
2009	57.8947372436523
2010	60
2011	59.2417068481445
2012	56.8720397949219
2013	55.9241714477539
2014	54.3269233703613
2015	55.238094329834
2016	57.6190490722656
2017	55.7142868041992
2018	56.6666679382324
2019	59.0476188659668
2020	60
2021	60
2022	62.2641525268555