Year	Number
1996	46.1956520080566
1998	27.1739139556885
2000	30.4347820281982
2002	39.4594612121582
2003	37.8378372192383
2004	19.9004974365234
2005	21.0784320831299
2006	25
2007	20.8737869262695
2008	18.9320392608643
2009	20.5741634368896
2010	22.4880390167236
2011	23.222749710083
2012	21.8009471893311
2013	21.3270149230957
2014	21.634614944458
2015	19.0476188659668
2016	17.1428565979004
2017	16.6666660308838
2018	13.8095235824585
2019	13.3333330154419
2020	14.7619047164917
2021	14.2857141494751
2022	15.5660381317139