Year	Number
1996	51.6129035949707
1998	45.4545440673828
2000	46.8085098266602
2002	34.9206352233887
2003	49.7354507446289
2004	50.2463035583496
2005	56.0975608825684
2006	57.5609741210938
2007	59.2233009338379
2008	61.1650466918945
2009	60.2870826721191
2010	59.0476188659668
2011	58.7677726745605
2012	61.6113739013672
2013	60.6635055541992
2014	53.8461532592773
2015	52.3809509277344
2016	50
2017	48.0952377319336
2018	42.8571434020996
2019	43.3333320617676
2020	41.9047622680664
2021	39.523811340332
2022	34.9056587219238