Year	Number
1996	25.2688179016113
1998	29.4117641448975
2000	34.5744667053223
2002	31.7460308074951
2003	23.280424118042
2004	19.2118225097656
2005	13.1707315444946
2006	20
2007	16.019416809082
2008	12.1359224319458
2009	21.0526313781738
2010	18.5714282989502
2011	18.9573459625244
2012	8.53080558776855
2013	9.47867298126221
2014	8.65384578704834
2015	10
2016	8.09523773193359
2017	8.09523773193359
2018	10.4761905670166
2019	11.9047622680664
2020	11.9047622680664
2021	16.1904754638672
2022	12.7358493804932