Year	Number
1996	10.7526884078979
1998	9.6256685256958
2000	10.1063833236694
2002	16.9312171936035
2003	16.9312171936035
2004	20.1970443725586
2005	17.0731716156006
2006	19.5121955871582
2007	18.4466018676758
2008	14.0776700973511
2009	15.7894735336304
2010	19.5238094329834
2011	18.4834117889404
2012	12.7962083816528
2013	14.6919431686401
2014	16.3461532592773
2015	14.2857141494751
2016	16.6666660308838
2017	15.2380952835083
2018	20.4761905670166
2019	24.2857151031494
2020	20.9523811340332
2021	26.1904754638672
2022	24.056604385376