Year	Number
1996	52.6881713867188
1998	50.8021392822266
2000	46.8085098266602
2002	50.2645492553711
2003	41.2698402404785
2004	31.0344829559326
2005	33.6585350036621
2006	22.4390239715576
2007	19.4174766540527
2008	22.3300971984863
2009	21.0526313781738
2010	20.9523811340332
2011	18.9573459625244
2012	10.4265403747559
2013	11.3744077682495
2014	15.384614944458
2015	14.2857141494751
2016	13.3333330154419
2017	13.8095235824585
2018	10.4761905670166
2019	10.4761905670166
2020	9.5238094329834
2021	7.61904764175415
2022	11.3207550048828