Year	% of total primary
1971	0
1972	0
1973	0
1974	0
1976	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
2014	0.211679995059967
2016	4.41759014129639
2017	4.66253995895386
2018	4.92735004425049