Year	Number
1996	16.6666660308838
1998	20.3208560943604
2000	18.6170215606689
2002	32.2751312255859
2003	30.1587295532227
2004	22.1674880981445
2005	19.5121955871582
2006	28.2926826477051
2007	29.1262130737305
2008	24.2718448638916
2009	21.5311012268066
2010	22.380952835083
2011	22.748815536499
2012	24.6445503234863
2013	26.5402851104736
2014	33.6538467407227
2015	25.238094329834
2016	27.619047164917
2017	26.1904754638672
2018	21.9047622680664
2019	14.2857141494751
2020	10.9523811340332
2021	7.61904764175415
2022	9.43396186828613