Year	Number
1996	56.9892463684082
1998	64.7058792114258
2000	65.4255294799805
2002	73.0158767700195
2003	60.3174591064453
2004	62.5615768432617
2005	57.5609741210938
2006	56.5853652954102
2007	57.2815551757813
2008	62.6213607788086
2009	58.8516731262207
2010	59.0476188659668
2011	54.028434753418
2012	55.4502372741699
2013	54.502368927002
2014	57.6923065185547
2015	55.238094329834
2016	57.6190490722656
2017	55.238094329834
2018	54.2857131958008
2019	59.0476188659668
2020	51.9047622680664
2021	46.1904754638672
2022	45.7547187805176