Year	Number
1996	78.391960144043
1998	80.5
2000	84.0796051025391
2002	82.0895538330078
2003	81.592041015625
2004	78.8461532592773
2005	79.4258346557617
2006	86.6028671264648
2007	85.1674652099609
2008	87.5
2009	87.2037887573242
2010	87.2037887573242
2011	83.0985946655273
2012	84.0375595092773
2013	82.6291046142578
2014	82.6923065185547
2015	80.9523773193359
2016	74.7619018554688
2017	78.0952377319336
2018	75.2380981445313
2019	75.2380981445313
2020	68.0952377319336
2021	70.9523773193359
2022	68.8679275512695