Year	Number
1996	19.0954780578613
1998	24.5
2000	24.8756217956543
2002	11.4427862167358
2003	11.4427862167358
2004	13.4615383148193
2005	13.8755979537964
2006	23.9234447479248
2007	22.9665069580078
2008	23.5576915740967
2009	18.0094795227051
2010	18.9573459625244
2011	16.9014091491699
2012	19.2488269805908
2013	19.2488269805908
2014	20.6730766296387
2015	25.7142848968506
2016	23.3333339691162
2017	28.5714282989502
2018	26.6666660308838
2019	24.761905670166
2020	29.5238094329834
2021	29.0476188659668
2022	25.4716987609863