Year	% of total merchandise exports
1960	0.47102408044456207
1961	0.8504090062363326
1962	0.29824082648497835
1963	0.2412578648947021
1964	0.4127979401382787
1965	0.7593523736722407
1966	0.6573850163172352
1967	0.717488983059318
1968	0.31483941413991756
1969	0.30054065062846286
1970	0.5253412679812047
1971	0.49132576635368547
1972	0.44116519095870593
1973	0.3186896551789956
1974	0.6415246855424478
1975	0.3887231569972172
1976	0.5808303685218087
1977	0.9149133381977297
1978	1.0766027953720474
1979	0.653842491673094
1980	0.6577293010986421
1981	1.2425839614841097
1982	1.4320167313334142
1983	1.0492453579994172
1984	1.0776634868394679
1985	0.8164511645907974
1986	1.0407225340886266
1987	1.4842428138488386
1988	1.8167885234732821
1989	0.7846159401029805
1990	0.9860748860350149
1991	0.8057048705325263
1992	0.8071073096162888
1993	0.8612340838368084
1994	0.7644395780987582
1995	0.8904541407563532
1996	0.8756612412354827
1997	0.9231245414361449
1998	1.1365763671397533
1999	1.1269383576781293
2000	1.1007422308675474
2001	1.3139243937723077
2002	1.2510466205546629
2003	1.3886178338654511
2004	1.4357337826494019
2005	1.5274865596858382
2006	1.6626253597384808
2007	1.9417213218844587
2008	2.2319754371799396
2009	2.4389762329106452
2010	2.4110568456921406
2011	2.6273785279365884
2012	2.7217027766878097
2013	2.7808851834325505
2014	3.0090878517744075
2015	3.072500666597897
2016	2.7336037288595465
2017	2.6205757337998272
2018	2.5724496093126104
2019	2.7559501539610265
2020	2.6908184791310847