Year	% of total merchandise exports
1963	66.83417085427136
1964	68.72037914691943
1965	71.01449275362319
1966	72.26890756302521
1967	82.8
1969	82.51409491488315
1970	80.77173676970969
1971	76.87896741430386
1972	86.98726413085147
1973	85.02026357966088
1974	90.33607480527347
1975	92.38919678163026
1976	96.50318525986144
1977	96.04675962434584
1978	97.55740183020889
1979	98.32558855998562
1980	97.40251075800875
1981	93.4858104075099
1982	92.64091684115233
1983	93.57032019198532
1984	94.2247243511557
1985	91.21375183219165
1986	94.70954839760873
1987	94.53595297654918
1988	94.94073681307057
1989	95.09769200581613
1990	94.2949072057854
1991	90.42273521779607
1992	88.98617993647782
1993	84.84367852008535
1994	85.50073652039464
1995	88.15409001841734
1996	90.57382911898785
1997	91.48136758493952
1998	91.0514674431672
1999	89.11303285774858
2000	87.67195069828819
2001	85.95070219603393
2002	81.69660966688676
2003	83.01543104091375
2004	81.83745744490163
2005	78.97753588671696
2006	77.75655386607932
2007	76.18827470123452
2008	74.21700440784174
2009	70.31591969693737
2010	66.95635879022812
2011	64.17704441444683
2012	65.42753276321865
2013	64.56969996954808
2014	68.9957807677284
2015	70.91492382419398
2016	64.1758488795852
2017	64.84932198146943
2018	66.67598652652191
2019	71.83675694531271
2020	85.69165001851836