Year	%
1991	0.5211027
1993	0.2239328
1996	0.3917638
1997	0.4381534
1998	0.399425
1999	0.4082631
2000	0.4133565
2001	0
2002	0.0391357
2003	0.0384839
2004	0.0483459
2005	0.0544685
2006	0.0970837
2007	0
2008	0.0488657
2009	0
2010	0.0318089
2011	0.0330325
2012	0.0539792
2013	0.0403112
2014	0
2015	0.03746
2016	0.0341524
2017	0.0358869
2018	0.0365191
2019	0.0321339
2020	0.0277369
2021	0.0302093