Year	% of total merchandise exports
1967	0.3604599468922345
1968	0.22848209722514506
1969	0.375723536181103
1970	0.51103062791033
1971	0.45668211923215757
1972	0.549275416033505
1973	0.4039599804963554
1974	0.3302483487582562
1975	0.7623041002682135
1976	0.14112519445739002
1977	0.09665683690501228
1978	0.05944153749958864
1980	0.13524272071045734
1981	0.587349312207908
1982	0.944447469953207
1983	0.12880260415446945
1984	0.0326152071176588
1985	0.03261520711685032
1986	0.15271254743158577
1987	0.013352113561034868
1988	0.1447418923730734
1989	0.15415160517676213
1990	0.03764023410437053
1991	0.004910031580641128
1992	0.01186428464015183
1993	0.0789714583164628
1994	0.0038595816872650027
1995	1.79146178709224
1996	0.03541911270520386
1997	0.047429056503129986
1998	0.07497357864580724
1999	0.682996290562726
2000	0.8860699165357868
2001	0.8869653870245721
2002	0.887023328940186
2003	0.8871695232664557
2004	0.8871694857028638
2005	0.8871702679461907
2006	0.8871708535398518
2007	0.8871708106136192
2008	0.8871708053304619
2009	0.8871708796234125
2010	0.8871709440326652
2011	0.8871708386497633
2012	0.8871707790106875
2013	0.8871708350860337
2014	0.8871707602401968
2015	0.8871709464859344
2016	0.8871708932038891
2017	0.887170780303149
2018	0.7769947590931617
2019	15.879942665343227
2020	16.87893382133479