Year	Number
1996	0.546448111534119
1998	0.546448111534119
2000	1.09289622306824
2002	0
2003	1.08108103275299
2004	1.49253726005554
2005	0.980392158031464
2006	0.97560977935791
2007	2.42718458175659
2008	8.73786449432373
2009	10.5263156890869
2010	12.4401912689209
2011	14.2180099487305
2012	14.6919431686401
2013	14.6919431686401
2014	15.384614944458
2015	10.4761905670166
2016	9.0476188659668
2017	9.5238094329834
2018	9.0476188659668
2019	9.0476188659668
2020	8.5714282989502
2021	9.5238094329834
2022	9.43396186828613