Year	Number
1996	38.2513656616211
1998	50.8196716308594
2000	46.9945373535156
2002	42.7027015686035
2003	37.8378372192383
2004	33.3333320617676
2005	33.8235282897949
2006	35.6097564697266
2007	42.7184448242188
2008	41.7475738525391
2009	39.2344512939453
2010	40.1913871765137
2011	40.7582931518555
2012	38.3886260986328
2013	36.9668235778809
2014	36.0576934814453
2015	36.6666679382324
2016	37.6190490722656
2017	35.7142868041992
2018	38.0952377319336
2019	36.6666679382324
2020	38.0952377319336
2021	41.4285697937012
2022	35.8490562438965