Year	Number
1996	59.2964820861816
1998	59.5
2000	58.7064666748047
2002	58.7064666748047
2003	58.2089538574219
2004	57.6923065185547
2005	57.8947372436523
2006	58.8516731262207
2007	59.3301429748535
2008	58.6538467407227
2009	60.6635055541992
2010	62.0853080749512
2011	61.5023460388184
2012	57.7464790344238
2013	55.3990592956543
2014	45.1923065185547
2015	44.761905670166
2016	43.3333320617676
2017	45.7142868041992
2018	50.9523811340332
2019	50.476188659668
2020	54.2857131958008
2021	52.3809509277344
2022	53.7735862731934