Year	% of total merchandise exports
1960	4.441839661926648
1961	3.4262150935387043
1962	2.6339867468877367
1963	2.658289028516191
1964	1.9032821907166442
1965	1.6157053509381514
1966	1.6919393455706304
1967	1.4319111630625365
1968	1.5376166941241076
1969	1.1366537400162902
1970	1.3089087867341465
1971	1.1415083388151532
1972	0.9911303550190064
1973	0.7701160082683843
1974	0.9988262033613667
1975	2.1295035285378234
1976	2.43146655766862
1977	2.0366518468863672
1978	1.4212345760693375
1979	2.367098651150489
1980	2.337289210420738
1981	3.7095342566696248
1982	3.263333445154241
1983	4.0900945450089825
1984	3.5532145980911376
1985	3.014030802751689
1986	2.1965895892287697
1987	1.5798996811513824
1988	0.9474422096129645
1989	0.7004961375251475
1990	0.8375650414886665
1991	0.6938439562086199
1992	0.8978958845784509
1993	0.9448216359140572
1994	1.2157259673863072
1995	1.0844166424146486
1996	0.9322878046632255
1997	0.7006110046752557
1998	0.7673218677479199
1999	0.7165749544437732
2000	0.8398561533028241
2001	1.0413265505974503
2002	0.9480818586270654
2003	1.0241496550845852
2004	1.169877996656813
2005	1.0807648926454094
2006	1.046837360467664
2007	1.203292056428159
2008	1.7223036275273922
2009	2.2767043563397698
2010	2.40038577237756
2011	2.5359346201174437
2012	2.653156191245066
2013	3.459483669164641
2014	3.125487421472083
2015	3.245613865332024
2016	3.310094550710585
2017	2.933284302800307
2018	2.597034349574002
2019	2.375521608784137
2020	2.1978408049721843