Year	Number
1996	41.7085418701172
1998	43.5
2000	42.7860679626465
2002	44.7761192321777
2003	53.233829498291
2004	46.1538467407227
2005	47.3684196472168
2006	46.4114837646484
2007	49.2822952270508
2008	45.6730766296387
2009	44.0758285522461
2010	40.2843589782715
2011	38.4976539611816
2012	31.4553985595703
2013	27.2300472259521
2014	31.25
2015	26.1904754638672
2016	23.3333339691162
2017	22.8571434020996
2018	21.4285717010498
2019	20
2020	18.5714282989502
2021	19.0476188659668
2022	17.9245281219482