Year	Number
1996	34.1708526611328
1998	35.5
2000	32.3383102416992
2002	20.3980102539063
2003	16.9154224395752
2004	15.865385055542
2005	13.8755979537964
2006	20.0956935882568
2007	20.0956935882568
2008	17.7884616851807
2009	13.7440757751465
2010	10.4265403747559
2011	12.6760559082031
2012	16.9014091491699
2013	17.3708915710449
2014	17.3076915740967
2015	15.7142858505249
2016	11.9047622680664
2017	16.6666660308838
2018	23.8095245361328
2019	21.9047622680664
2020	23.8095245361328
2021	23.8095245361328
2022	24.5283012390137