Year	Number
1996	35.5
1998	32.8358192443848
2000	32.3383102416992
2002	34.3283576965332
2003	39.3034820556641
2004	34.6153831481934
2005	24.0384616851807
2006	25
2007	21.1538467407227
2008	21.1538467407227
2009	20.8530807495117
2010	18.4834117889404
2011	13.6150236129761
2012	14.5539903640747
2013	13.6150236129761
2014	14.7783250808716
2015	16.2561569213867
2016	17.7339897155762
2017	15.2709360122681
2018	16.990291595459
2019	15.9420289993286
2020	15.4589376449585
2021	19.8067626953125
2022	18.8405799865723