Year	% of total primary
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1980	0
1981	0
1982	0
1984	0
1985	0
1986	0
1988	0
1989	0
2011	1.67142999172211
2012	2.48132991790771
2014	2.47764992713928
2015	3.26523995399475
2016	4.12325000762939
2017	4.79927015304565
2018	5.95128011703491
2019	7.2986798286438