Year	Number
1996	62.2340431213379
1998	52.1276588439941
2000	58.7301597595215
2002	49.2063484191895
2003	40.2010040283203
2004	47.5728149414063
2005	43.6893196105957
2006	41.062801361084
2007	39.613525390625
2008	40.3846168518066
2009	41.7061614990234
2010	36.0189590454102
2011	39.3364944458008
2012	39.8104248046875
2013	39.8104248046875
2014	36.6666679382324
2015	38.5714302062988
2016	39.0476188659668
2017	51.4285697937012
2018	49.5283012390137
2019	51.4150924682617
2020	43.3962249755859
2021	41.5094337463379
2022	42.9245300292969