Year	% of total merchandise exports
1960	0.578073730939973
1961	1.5470810862781774
1962	0.8611293690875356
1963	1.1512798927446763
1964	0.6738879076135147
1965	0.5210547332895364
1966	0.43824677310088067
1967	0.2918047120667042
1968	1.1592907626561473
1969	1.5495221727589832
1970	0.754475831679955
1971	0.8565384592237743
1972	0.6112903474784273
1973	0.3141859865710828
1974	0.5660895253055335
1975	1.3505606677256536
1976	1.5974725039590219
1977	1.3560293612274184
1978	0.9128674438526879
1979	1.3830508809361475
1980	1.0512576419077453
1981	1.4126450241237094
1982	1.6505867099009315
1983	1.6415391318879404
1984	1.356147550837288
1985	1.2681780028992997
1986	1.653078073493727
1987	1.2937533901674518
1988	1.2780294193612807
1989	1.1797725123498657
1990	0.958298125822089
1991	0.7598620492387452
1992	0.813290205429703
1993	0.7923132594473451
1994	0.8135172540713727
1995	0.98742122830028
1996	0.8309614056517114
1997	0.8902108530206829
1998	0.8571719563987298
1999	0.774527461233566
2000	0.6960293129355889
2001	0.708216436611409
2002	0.588827550274816
2003	0.4987980840344707
2004	0.6249943556749057
2005	0.5633831730687243
2006	0.5968059546589433
2007	0.6584426187981395
2008	0.8349281787483027
2009	0.6141774029015582
2010	0.7802410181719315
2011	0.9031149994754153
2012	0.8777654634497786
2013	0.8569942300627551
2014	0.9180711167711502
2015	0.9644348442105851
2016	0.9352975863335293
2017	0.9843108769390677
2018	1.043423355598272
2019	0.9870557584346551
2020	0.9560999798894158