Year	% of total merchandise exports
1960	3.1937734836285565
1961	3.5410764872521248
1962	4.856988667026443
1963	4.1596873255164715
1964	5.438459536820193
1965	3.8716000980151923
1966	3.7531987489337504
1967	2.9097387173396676
1968	3.140096618357488
1969	3.907790848844215
1970	3.2167318982387476
1971	6.29658193484699
1972	8.260938142703832
1973	8.630435805315036
1974	7.934643238325824
1975	9.294828019983466
1976	9.362773909864492
1977	9.905264478038145
1978	6.934935665434194
1979	6.485639270246728
1980	7.376633475088032
1981	8.899004156267857
1982	8.160600177869144
1983	6.394709920607053
1984	4.710400343278758
1985	4.263041596338036
1986	5.1215757106609905
1987	4.116269762157089
1988	6.486019424110606
1989	5.749950734317502
1990	3.787879255633444
1991	3.145636972753925
1992	2.136142292855862
1993	2.5341776726247778
1994	2.719599874960925
1995	2.6835043409629047
1996	2.6901442895573493
1997	2.6355584359472886
1998	2.382770094644512
1999	3.0971021982578595
2000	3.580919040774705
2001	3.4286302802398243
2002	5.8088429337007215
2003	7.06342224884523
2004	9.295890637380232
2005	10.801569755512999
2006	9.204258427203783
2007	7.802666732115257
2008	6.27029377680879
2009	5.596060847187407
2010	6.442076251436468
2011	6.244415215988357
2012	7.479611021794236
2013	6.965369341058876
2014	8.083916545898937
2015	9.15177564666343
2016	8.199975513936064
2017	8.922432289670752
2018	9.58040031267973
2019	9.632945720004832
2020	9.220167136503123