Year	Number
1996	79.8994979858398
1998	74.5
2000	68.6567153930664
2002	78.1094512939453
2003	79.6019897460938
2004	70.1923065185547
2005	78.4689025878906
2006	74.6411514282227
2007	78.9473648071289
2008	78.3653869628906
2009	80.568717956543
2010	79.620849609375
2011	81.2206573486328
2012	81.2206573486328
2013	81.6901397705078
2014	84.6153869628906
2015	83.3333358764648
2016	81.4285736083984
2017	82.8571395874023
2018	81.9047622680664
2019	81.9047622680664
2020	82.8571395874023
2021	83.3333358764648
2022	83.4905624389648