Year	Number
1996	39.2473106384277
1998	35.8288764953613
2000	41.4893608093262
2002	34.3915328979492
2003	37.037036895752
2004	32.5123138427734
2005	31.2195129394531
2006	26.3414630889893
2007	27.6699028015137
2008	30.5825233459473
2009	19.1387557983398
2010	16.6666660308838
2011	18.9573459625244
2012	15.1658763885498
2013	10.9004735946655
2014	8.17307662963867
2015	7.61904764175415
2016	9.0476188659668
2017	9.0476188659668
2018	9.5238094329834
2019	9.5238094329834
2020	10
2021	10
2022	11.3207550048828