Year	Number
1996	6.01092910766602
1998	3.82513666152954
2000	2.7322404384613
2002	1.08108103275299
2003	0
2004	0
2005	0.490196079015732
2006	0.97560977935791
2007	1.45631062984467
2008	0.970873773097992
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0
2022	0