Year	Number
1996	40.7035179138184
1998	42.5
2000	41.7910461425781
2002	28.8557205200195
2003	27.3631839752197
2004	30.769229888916
2005	21.0526313781738
2006	24.8803825378418
2007	25.3588523864746
2008	24.0384616851807
2009	17.5355453491211
2010	18.9573459625244
2011	18.7793426513672
2012	15.962441444397
2013	15.023473739624
2014	11.5384616851807
2015	12.380952835083
2016	16.6666660308838
2017	14.7619047164917
2018	16.6666660308838
2019	17.1428565979004
2020	17.619047164917
2021	16.6666660308838
2022	19.8113212585449