Year	% of total merchandise exports
1960	75.02007967284534
1961	75.70910578327211
1962	75.90186672767557
1963	76.95326699406381
1964	74.4694456993394
1965	73.91859867553163
1966	76.46565624875174
1967	78.4369124885068
1968	77.36002994774897
1969	77.96472820781852
1970	77.44849040474006
1971	78.71434356152876
1972	77.64620481214631
1973	78.88394621884483
1974	79.34864463881878
1975	78.0785380755676
1976	80.1455108358463
1977	80.28835023846958
1978	81.5459046996274
1979	82.80089025584807
1980	82.26511675590137
1981	79.7008268390274
1982	79.23147551706403
1983	78.58814088986779
1984	78.69939401200736
1985	78.8212327210485
1986	79.67285911467643
1987	80.36913374937258
1988	77.21068329511809
1989	79.69398500604761
1990	78.21237162861264
1991	80.83825579583288
1992	80.20180448035228
1993	79.41369596732282
1994	78.1492992084024
1995	76.31746431688856
1996	75.32266918498726
1997	77.57381267172404
1998	77.51939265859859
1999	79.64501071029443
2000	76.4284629035663
2001	74.60529606111037
2002	74.6106544760559
2003	73.36111630690681
2004	72.26086319395178
2005	71.24761293687446
2006	70.716269986172
2007	68.90230862315168
2008	67.30768263004171
2009	66.65775829805521
2010	66.02492202626131
2011	64.43248911607316
2012	63.863902754741794
2013	63.319906094253675
2014	63.815108390239
2015	65.74289079642254
2016	66.65421731610408
2017	65.5345678781236
2018	64.75955270270121
2019	63.99707390752898
2020	64.28817190331026