Year	Number
1996	25.2688179016113
1998	27.2727279663086
2000	27.659574508667
2002	23.8095245361328
2003	21.6931209564209
2004	15.7635469436646
2005	15.1219511032104
2006	19.5121955871582
2007	23.3009700775146
2008	23.3009700775146
2009	22.4880390167236
2010	20.9523811340332
2011	21.8009471893311
2012	22.274881362915
2013	20.8530807495117
2014	12.5
2015	10.9523811340332
2016	11.4285717010498
2017	10
2018	10.9523811340332
2019	10.9523811340332
2020	10.9523811340332
2021	10.9523811340332
2022	10.3773584365845