Year	Number
1996	89.5
1998	89.5522384643555
2000	88.5572128295898
2002	90.0497512817383
2003	89.5522384643555
2004	89.4230804443359
2005	84.1346130371094
2006	85.5769195556641
2007	87.0192337036133
2008	87.5
2009	88.1516571044922
2010	85.3080596923828
2011	83.0985946655273
2012	82.1596221923828
2013	78.4037551879883
2014	76.8472900390625
2015	82.7586212158203
2016	82.2660064697266
2017	82.2660064697266
2018	81.5533981323242
2019	80.6763305664063
2020	80.1932373046875
2021	79.22705078125
2022	79.7101440429688