Year	Number
1996	72.2826080322266
1998	70.6521759033203
2000	72.8260879516602
2002	69.1891860961914
2003	71.3513488769531
2004	73.1343307495117
2005	72.5490188598633
2006	71.5686264038086
2007	73.7864074707031
2008	74.7572784423828
2009	78.9473648071289
2010	81.339714050293
2011	78.6729888916016
2012	79.1469192504883
2013	80.568717956543
2014	81.25
2015	79.523811340332
2016	79.523811340332
2017	76.1904754638672
2018	78.5714263916016
2019	80.476188659668
2020	76.1904754638672
2021	75.7142868041992
2022	74.5283050537109