Year	Number
1996	50.5376358032227
1998	50.2673797607422
2000	52.6595726013184
2002	51.8518524169922
2003	53.439151763916
2004	54.1871910095215
2005	48.2926826477051
2006	59.0243911743164
2007	66.9902877807617
2008	68.4466018676758
2009	69.8564605712891
2010	72.3809509277344
2011	72.511848449707
2012	76.7772521972656
2013	77.7251205444336
2014	81.7307662963867
2015	77.6190490722656
2016	79.523811340332
2017	80
2018	78.5714263916016
2019	78.0952377319336
2020	78.5714263916016
2021	80
2022	79.2452850341797