Year	% of total merchandise exports
1960	2.0690882557084125
1961	2.1407077580757585
1962	1.5624268454231742
1963	2.16181607556446
1964	2.307514849938209
1965	2.021095349045482
1966	2.6759638369088736
1967	3.6562423562809885
1968	3.4171773970211072
1969	3.3298189480104585
1970	2.3698595013421984
1971	3.1724967477495736
1972	3.012693210513926
1973	2.95215624274138
1974	2.7337170955891366
1975	2.9238712372836475
1976	2.7646441805289244
1977	2.3718172490503617
1978	2.7977321364884413
1979	3.2755356111457226
1980	3.327698911490912
1981	3.1378127462215932
1982	3.232274232072088
1983	3.228141281779716
1984	3.4678195783766306
1985	3.8560861464385434
1986	3.472076293872163
1987	3.614692987531355
1988	3.9902606725852245
1989	4.015292881800396
1990	3.856978242267692
1991	3.8486101328231443
1992	4.819673255719841
1993	5.282555752105848
1994	5.289767053849833
1995	5.657490914517374
1996	6.06879566210954
1997	6.061846004030653
1998	5.159722344616098
1999	5.768811402818668
2000	6.603594935155933
2001	6.614344737050458
2002	7.096073494835934
2003	7.568831946341166
2004	7.756856031280571
2005	7.75941788847152
2006	7.730607676743179
2007	8.031281801419967
2008	8.31074796673156
2009	9.531998348524997
2010	10.310735918410598
2011	10.947341787872753
2012	11.57903713969821
2013	12.276311103794155
2014	12.363849760839345
2015	12.5069700537239
2016	12.86595987520392
2017	13.770907286789452
2018	14.429647295082276
2019	15.060209522364074
2020	15.660915757168087