Year	% of total merchandise exports
1960	0.775848207107252
1961	0.7114032533178017
1962	1.7456015434792596
1963	1.4744678544324383
1964	1.0171612441902038
1965	0.8700310029704417
1966	0.9818659515973943
1967	1.139223564109857
1968	1.0784086644906992
1969	1.1205609267445908
1970	1.2420107509044094
1971	1.0797828702109662
1972	1.389671451939392
1973	1.0048884462238223
1974	0.8031550913491993
1975	0.502357505830117
1976	0.4864670979067079
1977	0.4443755978649303
1978	0.5086746509415162
1979	0.4234018112422918
1980	0.572608687927241
1981	1.5544448082205498
1982	1.9355116509097066
1983	2.2315578145982107
1984	2.6173423609851376
1985	2.864554315149804
1986	2.193577376756607
1987	2.587912518714184
1988	2.668458847966051
1989	2.024767985724468
1990	2.234037152717551
1991	1.9395102633930035
1992	2.540393352607684
1993	2.479639028965309
1994	2.756976226461415
1995	2.8535569749240333
1996	3.0307366647541487
1997	2.6524609131018595
1998	2.4448314715235795
1999	2.0125053443965495
2000	2.2244138029425815
2001	2.2069709908768727
2002	2.4092226035457753
2003	2.343991164039977
2004	2.373026713075804
2005	1.9709908807811232
2006	2.0483018520869436
2007	2.3028400359312213
2008	2.2352193132283404
2009	2.1830313819963205
2010	2.478390640485457
2011	2.344874897736504
2012	2.259939127650675
2013	2.5145658872585654
2014	2.507214894682875
2015	2.6159945540189913
2016	2.669772285657117
2017	3.226735316460305
2018	2.6596530970601804
2019	2.941303156257311
2020	4.283230469724894