Year	Number
1996	27.1276588439941
1998	23.9361705780029
2000	12.1693124771118
2002	17.9894180297852
2003	12.0603017807007
2004	8.25242710113525
2005	3.88349509239197
2006	6.7632851600647
2007	10.1449279785156
2008	13.4615383148193
2009	18.4834117889404
2010	23.6966819763184
2011	28.4360198974609
2012	29.8578205108643
2013	27.014217376709
2014	36.6666679382324
2015	33.3333320617676
2016	36.1904754638672
2017	37.6190490722656
2018	35.8490562438965
2019	34.9056587219238
2020	32.0754699707031
2021	37.7358474731445
2022	39.6226425170898