Year	Number
1996	85.4271392822266
1998	84.5
2000	84.5771179199219
2002	84.0796051025391
2003	84.0796051025391
2004	86.538459777832
2005	88.0382766723633
2006	86.6028671264648
2007	88.0382766723633
2008	83.6538467407227
2009	87.6777267456055
2010	87.6777267456055
2011	86.3849792480469
2012	86.3849792480469
2013	85.9154891967773
2014	86.0576934814453
2015	84.2857131958008
2016	88.5714263916016
2017	88.0952377319336
2018	88.5714263916016
2019	88.5714263916016
2020	89.0476226806641
2021	87.6190490722656
2022	89.6226425170898