Year	Number
1996	51.075267791748
1998	50.8021392822266
2000	54.7872352600098
2002	56.0846557617188
2003	53.9682540893555
2004	55.6650238037109
2005	47.8048782348633
2006	47.8048782348633
2007	52.9126205444336
2008	59.2233009338379
2009	57.8947372436523
2010	55.7142868041992
2011	55.4502372741699
2012	55.4502372741699
2013	53.0805702209473
2014	51.4423065185547
2015	44.2857131958008
2016	43.3333320617676
2017	43.3333320617676
2018	39.0476188659668
2019	30.9523811340332
2020	35.238094329834
2021	34.2857131958008
2022	34.4339637756348