Year	Number
1996	85.4271392822266
1998	82
2000	84.5771179199219
2002	80.5970153808594
2003	82.0895538330078
2004	74.5192337036133
2005	75.1196136474609
2006	73.684211730957
2007	78.9473648071289
2008	80.288459777832
2009	78.1990509033203
2010	78.6729888916016
2011	76.9953079223633
2012	72.3004684448242
2013	72.7699508666992
2014	75.4807662963867
2015	71.9047622680664
2016	74.2857131958008
2017	75.7142868041992
2018	75.2380981445313
2019	75.7142868041992
2020	70.9523773193359
2021	69.523811340332
2022	66.9811325073242