Year	% of total merchandise exports
1960	8.47292817679558
1961	6.473713646532439
1962	7.758346581875994
1963	7.470260377672407
1964	13.227028499269567
1965	10.95363756312844
1966	9.682498032012594
1967	9.504661689167131
1968	10.145117063323683
1969	6.27694902215048
1970	6.694673047360696
1971	7.028250603064587
1972	5.915171380377372
1973	4.465708876933135
1974	7.6692563510136385
1975	6.7729576545071
1976	4.968302799581158
1977	3.985538956623602
1978	4.190044752444471
1979	3.392129004145531
1980	4.130563612134514
1981	14.731629447553605
1982	14.17155449673085
1983	13.480949970243547
1984	13.539565947091514
1985	13.751147950040915
1986	10.563746853082584
1987	12.850650593046046
1988	14.130538438068333
1989	11.812964144935673
1990	11.315415544603919
1991	8.427276379910365
1992	10.355301989779603
1993	10.059951688788452
1994	10.579749596588641
1995	14.620840916451671
1996	12.315869675061114
1997	14.896468320212453
1998	13.804844193221946
1999	12.861233179476589
2000	16.64047216668662
2001	16.29300130085137
2002	16.791162854520337
2003	17.379384507792466
2004	17.953845598757646
2005	19.346815424297162
2006	22.77211278174903
2007	21.846266920299975
2008	22.397071525397237
2009	24.586809347200706
2010	24.035205809575665
2011	32.75742666821254
2012	30.561595180910317
2013	32.26696976115997
2014	35.503109806614255
2015	35.16981397873792
2016	33.069649390802546
2017	35.2029343057551
2018	38.671280720905386
2019	36.77990918729349
2020	38.558364075621895