Year	Number
1996	7.0652174949646
1998	8.69565200805664
2000	11.4130430221558
2002	18.3783779144287
2003	21.0810813903809
2004	20.8955230712891
2005	27.9411773681641
2006	21.5686283111572
2007	19.9029121398926
2008	17.4757289886475
2009	6.22009563446045
2010	5.74162673950195
2011	3.79146909713745
2012	2.36966824531555
2013	5.21327018737793
2014	3.8461537361145
2015	4.2857141494751
2016	4.2857141494751
2017	3.33333325386047
2018	3.33333325386047
2019	3.33333325386047
2020	3.80952382087708
2021	4.7619047164917
2022	6.13207530975342