Year	Number
1996	15.7608699798584
1998	23.9130439758301
2000	29.8913040161133
2002	24.3243236541748
2003	28.6486492156982
2004	37.3134346008301
2005	28.9215679168701
2006	50.9803924560547
2007	60.6796112060547
2008	65.5339813232422
2009	67.464111328125
2010	69.3779907226563
2011	73.459716796875
2012	72.0379180908203
2013	72.9857788085938
2014	75.4807662963867
2015	74.7619018554688
2016	78.5714263916016
2017	80
2018	81.4285736083984
2019	81.4285736083984
2020	81.4285736083984
2021	82.8571395874023
2022	81.6037750244141