Year	Number
1996	27.4193553924561
1998	17.1122989654541
2000	17.021276473999
2002	19.0476188659668
2003	13.7566137313843
2004	13.3004922866821
2005	19.0243911743164
2006	23.4146347045898
2007	22.3300971984863
2008	22.3300971984863
2009	14.3540668487549
2010	9.5238094329834
2011	5.68720388412476
2012	7.5829381942749
2013	9.00473976135254
2014	0.961538434028625
2015	2.85714292526245
2016	0.476190477609634
2017	1.42857146263123
2018	0.952380955219269
2019	0.952380955219269
2020	0.952380955219269
2021	1.42857146263123
2022	1.41509437561035