Year	% of total merchandise exports
1960	48.46665168106355
1961	51.39638444070896
1962	58.41707165564366
1963	58.66319861860943
1964	59.1371905129001
1965	57.3751388357823
1966	51.670191352205265
1967	46.18358611367485
1968	55.005331887560004
1969	54.44770929979875
1970	57.258821611472456
1971	55.157721584724264
1972	56.22021732980145
1973	53.7133264642895
1974	49.16805368171492
1975	51.857162504139524
1976	48.621573066477424
1977	51.10012619861807
1978	50.222087376089675
1979	47.68793967707661
1980	45.07429703917292
1981	43.36626768763057
1982	42.00718858702153
1983	41.657522510507576
1984	42.603263399946236
1985	44.22242876436424
1986	45.60558318737185
1987	42.16305295146502
1988	38.44831620933546
1989	38.067993482807914
1990	28.257439270814928
1991	21.32894376689619
1992	12.806378249619355
1993	6.729793335943385
1994	3.7097375384253506
1995	3.4329904474493973
1996	3.1563820703297005
1997	1.1962153304939518
1998	1.1198286240165485
1999	1.0116903550822822
2000	1.1658306937374028
2001	1.24412003842774
2002	1.0601282544439998
2003	1.0174827355116096
2004	1.177107416116752
2005	0.8327243488600757
2006	0.435409550289531
2007	0.13657120181125507
2008	0.2242885842816
2009	0.15994158106243866
2010	0.2336153617345584
2011	0.24465148604526876
2012	0.30687341059178264
2013	0.26256330191534855
2014	0.20680747903046143
2015	0.2907220569815459
2016	0.2990919691664768
2017	0.33125803631116363
2018	0.2934605258191699
2019	0.2284015061341375
2020	0.2593407784832281