Year	Number
1996	57.6086959838867
1998	54.347827911377
2000	41.3043479919434
2002	10.8108110427856
2003	17.8378372192383
2004	16.9154224395752
2005	23.0392150878906
2006	19.1176471710205
2007	17.9611644744873
2008	16.990291595459
2009	12.4401912689209
2010	15.3110046386719
2011	18.0094795227051
2012	9.95260620117188
2013	9.47867298126221
2014	6.25
2015	9.5238094329834
2016	26.6666660308838
2017	32.8571434020996
2018	32.8571434020996
2019	21.4285717010498
2020	20
2021	14.2857141494751
2022	15.5660381317139