Year	Number
1996	37.5
1998	35.3260879516602
2000	40.7608680725098
2002	48.1081085205078
2003	49.1891899108887
2004	54.7263679504395
2005	48.529411315918
2006	51.9607849121094
2007	54.8543701171875
2008	55.8252410888672
2009	57.8947372436523
2010	59.3301429748535
2011	57.3459701538086
2012	60.1895751953125
2013	60.1895751953125
2014	65.8653869628906
2015	65.2380981445313
2016	66.1904754638672
2017	69.523811340332
2018	70
2019	65.7142868041992
2020	64.7619018554688
2021	65.2380981445313
2022	66.9811325073242