Year	Number
1996	18.5792350769043
1998	18.032787322998
2000	18.032787322998
2002	16.2162170410156
2003	18.9189186096191
2004	17.9104480743408
2005	26.9607849121094
2006	30.2439022064209
2007	22.3300971984863
2008	23.3009700775146
2009	30.1435413360596
2010	24.4019145965576
2011	24.6445503234863
2012	24.6445503234863
2013	38.8625602722168
2014	42.788459777832
2015	45.238094329834
2016	46.6666679382324
2017	46.6666679382324
2018	47.6190490722656
2019	46.1904754638672
2020	47.6190490722656
2021	58.5714302062988
2022	50.9433975219727