Year	% of total merchandise exports
1960	84.16529279775261
1961	85.49394000947932
1962	85.25808220938467
1963	82.6502619758874
1964	79.41694266624197
1965	78.01273982200048
1966	80.32742452516297
1967	81.63188684594613
1968	78.77969012690757
1969	79.80510673819427
1970	78.6604636882808
1971	80.1704896586143
1972	78.58113078088749
1973	78.05117628670185
1974	80.27635614615404
1975	79.50752559060325
1976	79.62043300440858
1977	79.12024150058798
1978	82.92672803473204
1979	82.03142427112569
1980	79.03945749145069
1981	75.02129061017179
1982	79.93562690069375
1983	81.23840981946962
1984	81.49413398739452
1985	83.09087002417215
1986	80.41292788149426
1987	79.67571821644346
1988	78.97964148851938
1989	79.47366728679071
1990	80.62706390386326
1991	78.6527844420695
1992	77.52124300844646
1993	76.11188299881523
1994	73.14163790702266
1995	72.34460285480858
1996	71.48025981684853
1997	73.99247029110572
1998	65.57990132821514
1999	67.1263682675231
2000	66.18835443832756
2001	62.41714487322082
2002	60.92202712960296
2003	64.3615709449197
2004	61.980703125449935
2005	62.22893477113431
2006	64.86172579543252
2007	59.56076088948367
2008	57.06193610711612
2009	56.12271762830813
2010	52.65864467201381
2011	52.16266028712532
2012	48.34208188683043
2013	45.33918477931522
2014	43.7231795105816
2015	44.55718689032576
2016	44.43519320405423
2017	43.49547174006596
2018	41.55397905973516
2019	42.4045110298025
2020	44.278223487091914