Year	Number
1996	57.6086959838867
1998	54.8913040161133
2000	57.6086959838867
2002	57.2972984313965
2003	49.7297286987305
2004	58.2089538574219
2005	51.470588684082
2006	55.3921585083008
2007	61.6504859924316
2008	65.0485458374023
2009	68.4210510253906
2010	66.9856491088867
2011	69.1943130493164
2012	68.2464447021484
2013	67.7725143432617
2014	70.6730804443359
2015	67.1428604125977
2016	68.0952377319336
2017	70.9523773193359
2018	71.9047622680664
2019	72.3809509277344
2020	71.9047622680664
2021	70.476188659668
2022	68.8679275512695