Year	% of total merchandise exports
1969	0.04088574886337618
1970	0.040524866896773384
1971	0.047966367112001466
1972	0.02893138002682728
1973	0.04349532690451185
1974	0.019173249482322265
1975	0.015579110144308721
1976	0.02391269691743598
1977	0.031611346809749606
1978	0.04899654113526441
1979	0.020964120860062586
1980	0.022546674365531084
1981	0.02514347495395601
1982	0.019718202668530097
1983	0.04135615428711817
1984	0.034938991146229274
1985	0.037038456134973245
1987	0.10506956922701405
1988	0.026364913390157722
1989	0.011647456974334525
1992	0.005023574919443388
1995	0.031092362585473404
1996	0.04297482664046214
1997	0.037121718274033356
1998	0.014751232995316353
1999	0.03654463687686523
2000	0.29374225615147237
2001	0.025557867718478205
2002	0.011924382190265306
2003	0.0400360033518757
2004	0.047442636773155814
2005	0.10227753122730064
2006	0.07988118998686838
2007	0.30907292634424605
2008	0.25726735124037986
2009	0.17332633926683236
2010	0.20684229940834334
2011	0.5347726168850618
2012	0.7156032699845529
2013	0.2373130031703808
2014	0.21513410386487644
2015	0.1852287707660974
2016	0.37844455569807034
2017	2.0483926374374373
2018	0.3745731497932518
2019	0.6750175093074398
2020	0.8590520569863865