Year	Number
1996	21.3114757537842
1998	27.8688526153564
2000	31.1475410461426
2002	37.8378372192383
2003	31.8918914794922
2004	51.243782043457
2005	34.3137245178223
2006	43.9024391174316
2007	42.7184448242188
2008	34.9514579772949
2009	50.2392349243164
2010	61.7224884033203
2011	53.554500579834
2012	45.497631072998
2013	46.445499420166
2014	57.6923065185547
2015	53.8095245361328
2016	46.6666679382324
2017	56.6666679382324
2018	42.8571434020996
2019	40.9523811340332
2020	49.0476188659668
2021	42.8571434020996
2022	38.2075462341309