Year	% of total merchandise exports
1960	3.571134020618557
1961	2.5169092027054725
1962	2.217914320252381
1963	1.9166426000408545
1964	0.9102785118199008
1965	0.9707670212937622
1966	0.9559365137179084
1967	0.7408283708807367
1968	0.9134779909318337
1969	1.2931650508543528
1970	0.9995121802972675
1971	0.9203267409611647
1972	0.9476967828270335
1973	2.423684938579658
1974	2.55216845104978
1975	2.309095532282996
1976	3.031865707087137
1977	4.804699259279081
1978	2.27794254428773
1979	2.333762702489749
1980	2.8645207226580984
1981	2.1728897012296904
1982	2.007204789849668
1983	1.4036728975720119
1984	1.7691071787771744
1985	2.026981594647185
1986	2.734356066379018
1987	3.379978894189421
1988	3.744767114120321
1989	4.78461926057438
1990	3.71705799406094
1991	3.3800318025899556
1992	2.8944022607724866
1993	4.410891008281519
1994	8.313862102342075
1995	8.549584493718394
1996	10.213451268744036
1997	10.666116924491819
1998	6.488166322210728
1999	8.213840450359609
2000	9.698826926870067
2001	7.520597969189685
2002	7.397141135057257
2003	8.302031934156508
2004	8.186831074048799
2005	10.041965669859042
2006	11.77608467456378
2007	14.968028776399816
2008	15.691210607643551
2009	21.110191690570804
2010	18.267388003766342
2011	20.630616124911548
2012	20.656277837705826
2013	21.726774035162403
2014	19.397887556512178
2015	18.967348200094992
2016	19.323750986938094
2017	20.765506428158435
2018	21.096021478120093
2019	21.477731943796456
2020	20.998594883081022