Year	% of total merchandise exports
1960	6.1990107083572505
1961	6.164173022077728
1962	5.656388076778708
1963	4.995647251226569
1964	5.077038734031542
1965	4.61531417657726
1966	4.85995247948595
1967	4.643842956001725
1968	4.7111070850911405
1969	4.482452312459134
1970	4.461034936258935
1971	4.341555445846761
1972	4.164651104813013
1973	4.091404009723538
1974	5.012405643196364
1975	4.876059783151149
1976	4.120609311233391
1977	3.8771857261201195
1978	3.8051858458233707
1979	4.069511261270324
1980	4.5770520535293
1981	4.8226696494890104
1982	3.7758082527947314
1983	3.1095295544894483
1984	3.193972867269612
1985	3.1748381467590745
1986	3.0256911297124622
1987	2.8914888530570515
1988	2.8872561052742665
1989	3.0851638589955614
1990	3.0174338570240335
1991	3.396171084810036
1992	3.840464583917936
1993	4.168206215298227
1994	4.474140054827469
1995	4.031816001783682
1996	4.276039302509653
1997	4.754663862939528
1998	5.038562191823799
1999	4.70233989509422
2000	4.99623493060578
2001	4.976984416884793
2002	4.490258936115818
2003	4.026008120374048
2004	3.967430317889194
2005	4.095313462894326
2006	4.233289142241795
2007	4.184637956302986
2008	4.444270039738504
2009	4.529848876538209
2010	5.0504219477480445
2011	5.208715664014539
2012	5.508050394447441
2013	5.532248277913928
2014	5.585613899072772
2015	5.731818613561526
2016	5.506939561364127
2017	5.48336297302472
2018	5.434940104395508
2019	5.401611902908199
2020	4.858340863024602