Year	Number
1996	16.9398899078369
1998	13.1147537231445
2000	6.01092910766602
2002	16.2162170410156
2003	4.32432413101196
2004	0.995024859905243
2005	3.92156863212585
2006	13.1707315444946
2007	15.0485439300537
2008	16.990291595459
2009	20.0956935882568
2010	25.8373203277588
2011	16.5876770019531
2012	23.6966819763184
2013	27.962085723877
2014	17.3076915740967
2015	18.0952377319336
2016	16.6666660308838
2017	18.5714282989502
2018	13.3333330154419
2019	13.3333330154419
2020	10.9523811340332
2021	11.4285717010498
2022	12.2641506195068