Year	Number
1996	47.2361793518066
1998	48.5
2000	40.7960205078125
2002	16.9154224395752
2003	16.9154224395752
2004	7.692307472229
2005	10.0478467941284
2006	14.3540668487549
2007	9.09090900421143
2008	16.3461532592773
2009	16.1137447357178
2010	16.1137447357178
2011	22.5352115631104
2012	21.5962448120117
2013	22.0657272338867
2014	20.1923084259033
2015	20.9523811340332
2016	23.3333339691162
2017	26.6666660308838
2018	25.7142848968506
2019	27.1428565979004
2020	30
2021	19.5238094329834
2022	23.5849056243896