Year	% of total
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	12.593027810419114
2007	1.4495517833301546
2008	1.3553951769054744
2009	1.227736468960747
2010	1.0001695202576708
2011	1.0302313798344875
2012	1.3544973544973546
2013	1.234119782214156
2014	1.1703511053315996
2015	1.124593074874223