Year	Number
1996	3.5
1998	11.9402980804443
2000	27.3631839752197
2002	38.8059692382813
2003	39.8009948730469
2004	37.019229888916
2005	36.0576934814453
2006	31.730770111084
2007	36.0576934814453
2008	36.0576934814453
2009	44.0758285522461
2010	41.2322273254395
2011	39.9061050415039
2012	41.3145523071289
2013	41.3145523071289
2014	40.3940887451172
2015	41.8719215393066
2016	41.3793106079102
2017	42.3645324707031
2018	38.8349533081055
2019	41.062801361084
2020	39.613525390625
2021	43.4782600402832
2022	43.4782600402832