Year	Number
1996	19.0217399597168
1998	14.6739130020142
2000	14.6739130020142
2002	18.9189186096191
2003	18.9189186096191
2004	17.9104480743408
2005	20.5882358551025
2006	14.7058820724487
2007	9.22330093383789
2008	7.76699018478394
2009	6.22009563446045
2010	6.22009563446045
2011	9.47867298126221
2012	12.7962083816528
2013	11.8483409881592
2014	11.5384616851807
2015	13.8095235824585
2016	17.1428565979004
2017	16.6666660308838
2018	11.4285717010498
2019	10
2020	10.4761905670166
2021	8.5714282989502
2022	9.90566062927246