Year	% of total merchandise exports
1960	77.91394335511983
1961	76.93829825508185
1962	77.89757412398922
1963	79.68622202394229
1964	70.71084402577013
1965	71.20648231026523
1966	74.81533120325845
1967	79.36600092893636
1968	73.88017165368427
1969	75.98554423859999
1970	77.00183040962898
1971	79.08063656055775
1972	82.87577365337239
1973	80.5404943679484
1974	80.55293914347673
1975	78.52028862254409
1976	73.95438158597115
1977	74.31249576816835
1978	84.10346496700431
1979	81.74077963946094
1980	70.94057670780428
1981	69.73805057941217
1982	78.05759688707093
1983	80.50222057607986
1984	80.97473305420631
1985	85.40541763350326
1986	82.32300308664074
1987	83.10459890694102
1988	82.57276126067586
1989	82.03624038681603
1990	83.77097625784083
1991	80.95211201453053
1992	80.94009330578061
1993	79.12405696635028
1994	76.02102806292062
1995	72.25426283156997
1996	72.45315477777524
1997	72.99982845706545
1998	70.20469009091701
1999	67.72467393731624
2000	66.07303632075636
2001	64.24252364531125
2002	64.15823488274042
2003	65.08168434001482
2004	62.46871357552934
2005	63.51320363391473
2006	61.977154768802436
2007	59.22226768823544
2008	57.73300315660915
2009	55.08621761519941
2010	53.85703745951136
2011	53.246537616901115
2012	51.63962628560154
2013	47.15042935744578
2014	43.211263033873244
2015	43.53110192563002
2016	44.51651235875945
2017	45.006842903509806
2018	42.55901425262613
2019	41.584575701625134
2020	42.07893371048607