Year	Number
1996	14.8936166763306
1998	10.638298034668
2000	4.7619047164917
2002	1.58730161190033
2003	6.03015089035034
2004	5.33980560302734
2005	5.33980560302734
2006	11.5942029953003
2007	9.17874431610107
2008	9.13461494445801
2009	7.5829381942749
2010	9.00473976135254
2011	10.4265403747559
2012	14.6919431686401
2013	17.0616111755371
2014	13.3333330154419
2015	17.1428565979004
2016	14.7619047164917
2017	13.3333330154419
2018	12.7358493804932
2019	10.8490562438965
2020	10.3773584365845
2021	10.3773584365845
2022	11.7924528121948