Year	Number
1996	86.9565200805664
1998	85.8695678710938
2000	83.1521759033203
2002	84.3243255615234
2003	85.405403137207
2004	86.0696487426758
2005	84.3137283325195
2006	87.2549057006836
2007	88.3495178222656
2008	88.3495178222656
2009	88.5167465209961
2010	90.9090881347656
2011	86.2559204101563
2012	83.8862533569336
2013	78.1990509033203
2014	82.6923065185547
2015	80.476188659668
2016	81.9047622680664
2017	80.9523773193359
2018	78.0952377319336
2019	80
2020	80.9523773193359
2021	76.6666641235352
2022	75.4716949462891