Year	Number
1996	81.1827926635742
1998	81.2834243774414
2000	81.9148941040039
2002	80.9523773193359
2003	80.9523773193359
2004	81.2807846069336
2005	80
2006	78.0487823486328
2007	78.1553421020508
2008	78.6407775878906
2009	80.3827743530273
2010	81.9047622680664
2011	88.1516571044922
2012	84.8341217041016
2013	82.9383850097656
2014	75
2015	81.9047622680664
2016	79.523811340332
2017	81.4285736083984
2018	81.4285736083984
2019	78.5714263916016
2020	80.476188659668
2021	80
2022	80.1886825561523