Year	Number
1996	42.9347839355469
1998	48.9130439758301
2000	47.2826080322266
2002	34.5945930480957
2003	35.1351356506348
2004	27.3631839752197
2005	34.3137245178223
2006	29.4117641448975
2007	32.0388336181641
2008	32.0388336181641
2009	33.9712905883789
2010	27.7511959075928
2011	24.6445503234863
2012	26.5402851104736
2013	27.014217376709
2014	25.480770111084
2015	20.9523811340332
2016	19.0476188659668
2017	22.8571434020996
2018	25.238094329834
2019	23.3333339691162
2020	22.8571434020996
2021	22.380952835083
2022	22.1698112487793