Year	Number
1996	25.543478012085
1998	23.9130439758301
2000	21.7391300201416
2002	28.1081085205078
2003	22.7027034759521
2004	20.8955230712891
2005	24.5098037719727
2006	17.1568622589111
2007	16.5048542022705
2008	21.3592224121094
2009	29.6650714874268
2010	32.5358848571777
2011	28.9099521636963
2012	10.9004735946655
2013	9.95260620117188
2014	7.692307472229
2015	6.66666650772095
2016	7.61904764175415
2017	6.1904764175415
2018	7.61904764175415
2019	6.66666650772095
2020	6.66666650772095
2021	9.0476188659668
2022	6.13207530975342