Year	% of total merchandise exports
1960	0.22169215658762453
1961	0.041862766240850446
1962	0.12542885601505147
1963	0.29495278554291127
1964	0.32037483856111654
1965	0.5398663534895577
1966	0.3244409339142695
1967	0.3822591077229421
1968	0.36182442211470867
1969	0.4889689107030547
1970	0.25088243279934835
1971	0.18876198829294336
1972	0.2094550709264832
1973	0.322160939811897
1974	0.4475955610357583
1975	0.5933339826045264
1976	0.5052356490103019
1977	0.7251269078913635
1978	0.7515529411473378
1979	0.6951821613789289
1980	0.6968314532183145
1981	0.8955189170768445
1982	1.0703930372587664
1983	1.1354604179509187
1984	0.7830172750737635
1985	1.1804682116838094
1986	1.2098322141908353
1987	1.2289352275017538
1988	1.0184366350898157
1989	0.7871968798999907
1990	0.8738333366804727
1991	1.4615284619836693
1992	1.3579597021597474
1993	1.988920913309213
1994	2.8183648288849925
1995	2.154792770217464
1996	1.8915807650044476
1997	0.9252855746071114
1998	0.995721967582208
1999	0.9324266833392486
2000	0.9979479709422256
2001	0.8597587280184372
2002	0.5105299682079274
2003	0.5201221156180915
2004	0.5317047075905668
2005	0.7447817359158613
2006	0.6623627073915753
2007	0.4267148296245085
2008	1.069595143398909
2009	0.6080809096259561
2010	1.0243424940671662
2011	1.0011392204564205
2012	1.0978536136712505
2013	0.9584681525310614
2014	0.9887742034158643
2015	0.7494414212428954
2016	0.7316114894086423
2017	0.8637182524990258
2018	0.6222093257345623
2019	0.8332559678043716
2020	0.555320181467985