Year	Number
1996	84.5
1998	79.6019897460938
2000	79.6019897460938
2002	78.1094512939453
2003	77.6119384765625
2004	86.538459777832
2005	81.7307662963867
2006	83.1730804443359
2007	86.0576934814453
2008	81.25
2009	81.5165863037109
2010	75.8293838500977
2011	75.1173706054688
2012	74.6478881835938
2013	76.0563354492188
2014	77.8325119018555
2015	81.2807846069336
2016	81.7733993530273
2017	78.8177337646484
2018	78.1553421020508
2019	76.8115921020508
2020	81.159423828125
2021	83.5748825073242
2022	82.6086959838867