Year	% of total merchandise exports
1960	0.7507373313075342
1961	0.9083333333333334
1962	0.8086894473955444
1963	0.8848219012327007
1964	0.9382166933073876
1965	0.9964903484582602
1966	0.7310115297753477
1967	0.6243783843518621
1968	0.35680184933916276
1969	0.2777892947468801
1970	0.2702892445942151
1971	0.29397818871503084
1972	0.28649597357010115
1973	0.29746115953012503
1974	0.3578917936530127
1975	0.40993425080522794
1976	0.4177256895415608
1977	0.3233934892831274
1978	0.432928829124303
1979	0.34454226945403305
1980	0.34320623262518446
1981	0.4421341182266632
1982	0.4950875038378876
1983	0.38902180467215186
1984	0.34819959207274065
1985	0.33892403226742496
1986	0.41783287574922906
1987	0.37434434526548266
1988	0.4109350332233169
1989	0.4258631405136423
1990	0.43707601852028005
1991	0.3373050499266149
1992	0.39550196347056776
1993	0.3356139577035591
1994	0.2722292630545727
1995	0.3418061418073338
1996	0.40304442780108046
1997	0.2812574187227206
1998	0.24960538720434303
1999	0.24848420140482133
2000	0.2670597945888567
2001	0.2738432895151071
2002	0.36483792520113684
2003	0.35528270939492657
2004	0.4598955080584502
2005	0.4857318281444981
2006	0.5388598190931275
2007	0.5774390655905839
2008	0.6931963997622952
2009	0.8135121353592973
2010	0.7157088945303788
2011	0.7787999684460822
2012	0.636273658952117
2013	0.6200671658663865
2014	0.6020836182759801
2015	0.7061366802419988
2016	0.780523219146558
2017	0.7241520586099771
2018	0.8206238530422315
2019	0.8034391951642693
2020	0.7826406086756346