Year	%
1997	58.10796
2000	37.05447
2001	37.02003
2002	0
2003	0.023045
2004	0
2005	0
2006	0
2007	0
2008	7.271183
2009	0
2010	0
2011	7.498242
2012	0
2013	4.644232
2014	3.529884
2015	3.408211
2016	4.002896
2017	3.405385
2018	0
2019	0
2020	0
2021	0