Year	% of total merchandise exports
1960	0.1765993261858557
1961	0.40560037324452525
1962	0.48138303209245803
1963	0.3835726178657283
1964	0.9828739403803004
1965	0.9936681226228138
1966	0.8647155481418629
1967	0.2889935815403324
1968	0.16350985073317043
1969	0.18510496650942695
1970	0.20743912223467842
1971	0.6163180893130719
1972	1.118966946284935
1973	1.0373634014340907
1974	1.0700377500277691
1975	0.740586986843134
1976	0.4555112727523943
1977	1.0355406266780718
1978	1.0733749179005498
1979	1.18436309042129
1980	0.9338332268087184
1981	1.0325469157214284
1982	0.9297414581210998
1983	1.5954502927953924
1984	1.1050474636799736
1985	2.0105694571283013
1986	1.9250076360200856
1987	1.6499111966681732
1988	2.4249661651423553
1989	2.210998115762702
1990	1.7937976450080395
1991	1.5007453884950055
1992	1.73829004357639
1993	1.948776339802032
1994	1.9153686831615977
1995	2.2262924057156455
1996	2.165656015703249
1997	2.1703571507775536
1998	1.515642705561091
1999	1.3264693795902425
2000	1.6217168166699183
2001	2.197342524252248
2002	2.6407007415760617
2003	3.849164054186315
2004	4.101681055024168
2005	4.358089566341965
2006	4.411679976148583
2007	5.764711154266427
2008	6.001864223447041
2009	8.340500016347386
2010	9.717681346205637
2011	10.597944712099807
2012	10.64843551924471
2013	11.42413709438982
2014	10.736128872268399
2015	10.760242060420785
2016	11.282268930214215
2017	12.308623052181442
2018	13.758549430114533
2019	14.255144613371579
2020	16.17397575982223