Year	Number
1996	16.9398899078369
1998	16.3934421539307
2000	12.5683059692383
2002	9.18918895721436
2003	12.972972869873
2004	8.4577112197876
2005	10.7843141555786
2006	6.82926845550537
2007	7.76699018478394
2008	7.76699018478394
2009	7.17703342437744
2010	7.17703342437744
2011	7.5829381942749
2012	9.47867298126221
2013	7.5829381942749
2014	12.5
2015	11.9047622680664
2016	10.4761905670166
2017	11.4285717010498
2018	10.4761905670166
2019	13.8095235824585
2020	10.4761905670166
2021	11.4285717010498
2022	9.90566062927246