Year	Number
1996	17.7419357299805
1998	28.8770046234131
2000	6.91489362716675
2002	1.58730161190033
2003	0.52910053730011
2004	0.985221683979034
2005	2.92682933807373
2006	2.92682933807373
2007	13.5922327041626
2008	15.0485439300537
2009	14.8325357437134
2010	14.7619047164917
2011	13.7440757751465
2012	20.8530807495117
2013	21.3270149230957
2014	18.75
2015	21.9047622680664
2016	18.5714282989502
2017	18.5714282989502
2018	17.1428565979004
2019	16.1904754638672
2020	17.1428565979004
2021	18.0952377319336
2022	15.5660381317139