Year	Number
1996	57.2864303588867
1998	57
2000	60.6965179443359
2002	60.1990051269531
2003	62.1890563964844
2004	63.9423065185547
2005	63.1578941345215
2006	64.1148300170898
2007	63.1578941345215
2008	65.8653869628906
2009	65.4028472900391
2010	66.3507080078125
2011	67.1361465454102
2012	64.7887344360352
2013	64.3192520141602
2014	69.2307662963867
2015	67.6190490722656
2016	71.9047622680664
2017	68.5714263916016
2018	68.5714263916016
2019	69.0476226806641
2020	73.8095245361328
2021	72.8571395874023
2022	70.2830200195313