Year	Number
1996	23.3695659637451
1998	26.0869560241699
2000	26.0869560241699
2002	29.1891899108887
2003	24.3243236541748
2004	20.8955230712891
2005	25
2006	29.9019603729248
2007	30.0970878601074
2008	35.4368934631348
2009	34.4497604370117
2010	36.3636360168457
2011	33.1753540039063
2012	37.9146919250488
2013	40.2843589782715
2014	41.8269233703613
2015	43.8095245361328
2016	40
2017	38.5714302062988
2018	38.5714302062988
2019	39.523811340332
2020	39.523811340332
2021	42.8571434020996
2022	40.5660362243652