Year	% of total merchandise exports
1960	67.59429182795488
1961	69.35764258749542
1962	71.6689956491759
1963	72.6083547042218
1964	72.96216937086164
1965	73.1818171750715
1966	73.01342656954301
1967	72.86320679960217
1968	72.70916738465314
1969	72.97523889999061
1970	72.09073044534284
1971	72.66712199004563
1972	73.17183223279996
1973	73.26251453265924
1974	71.05819070239765
1975	67.40247832529359
1976	69.1093657880259
1977	68.96481670940126
1978	69.75408950306804
1979	71.3178680860024
1980	70.19292326293657
1981	68.36418401161477
1982	70.23586892804042
1983	71.50671223857076
1984	73.16147187136879
1985	73.86526397387979
1986	76.30705705790942
1987	78.1086320286787
1988	78.65134926978766
1989	79.10488889061362
1990	79.4178048895772
1991	80.11935104662923
1992	80.32762503209045
1993	80.07064669659424
1994	80.89628592600515
1995	81.01437063859113
1996	80.80151986127304
1997	81.54567150046773
1998	82.9875355831853
1999	88.89388043749418
2000	88.47389685543638
2001	88.16766703148303
2002	88.0198198713405
2003	87.8671121987446
2004	86.98577382675141
2005	86.27878002075157
2006	85.7876963912484
2007	85.0513434917592
2008	83.85380853904411
2009	83.63360366901341
2010	82.77941239133634
2011	82.08998158925948
2012	81.12125579232858
2013	80.9771992847584
2014	81.84862870724416
2015	83.13244220907265
2016	83.45971591511146
2017	82.84607774873632
2018	83.11446717264467
2019	83.28080052665437
2020	83.56338224958907