Year	Number
1996	65.0537643432617
1998	62.5668449401855
2000	60.638298034668
2002	58.7301597595215
2003	58.7301597595215
2004	58.6206893920898
2005	54.634147644043
2006	58.5365867614746
2007	59.2233009338379
2008	58.737865447998
2009	54.0669860839844
2010	53.3333320617676
2011	54.028434753418
2012	58.7677726745605
2013	58.2938385009766
2014	54.3269233703613
2015	52.3809509277344
2016	53.3333320617676
2017	46.1904754638672
2018	52.8571434020996
2019	52.8571434020996
2020	52.3809509277344
2021	50.476188659668
2022	50.4716987609863