Year	% of total merchandise exports
1960	5.7057903441151145
1961	5.093933924424811
1962	4.922042928922799
1963	4.580120754911378
1964	6.3535628554782395
1965	6.432890523096553
1966	6.077362989654943
1967	5.431846340345824
1968	5.473693064732579
1969	4.346449228850946
1970	4.439350172315178
1971	4.758007719291511
1972	4.663339688703958
1973	4.68136007342664
1974	5.8713509736088625
1975	6.28466458859138
1976	4.613422526546765
1977	5.306901739624992
1978	5.416477002561147
1979	4.813570385086526
1980	5.823100600686841
1981	9.600042235757726
1982	9.589935246646498
1983	9.888519011140188
1984	9.389247965378338
1985	9.568163281093977
1986	8.086426325231466
1987	8.280876426469714
1988	8.555400956220755
1989	7.05923005518624
1990	6.89417547022405
1991	5.831537686696799
1992	7.42927470276166
1993	7.9301678757081
1994	6.990490677320686
1995	7.730668476971381
1996	7.747009403970587
1997	7.963584451516144
1998	7.644428444164336
1999	7.757059760845545
2000	8.163430515287983
2001	8.707448052107354
2002	9.511500652029891
2003	10.28294230565439
2004	10.911562635326263
2005	11.69128852694256
2006	12.742500751786892
2007	14.56970837887342
2008	15.929457534183081
2009	16.524711427666265
2010	17.315203429878505
2011	18.23371248802586
2012	18.644961014162302
2013	18.917029239915355
2014	19.458454101235702
2015	18.48127503463742
2016	18.56566863434437
2017	19.438598120065105
2018	20.020766433042628
2019	19.994243789087545
2020	19.204733061181376