Year	% of total merchandise exports
1961	0.008318775476249896
1962	0.019364083497928043
1963	0.026845637583892613
1964	0.014702098724592936
1965	0.018119881133579763
1966	0.0742611020347542
1967	0.3516298041421991
1968	0.09874105159219945
1969	0.10802522911802627
1970	0.00946521533364884
1972	0.01599488163787588
1974	0.020911182027293636
1976	0.0021598505383427467
1977	0.005259171995960956
1978	0.025115476593467793
1979	0.08002639467052292
1980	0.11837637456777048
1981	0.11998860108289712
1982	0.011794539128383559
1983	0.09488309047780413
1984	0.06834845283956754
1985	0.9302981182606245
1986	0.6776034236804565
1988	0.16709391876478405
1989	0.1889058701658625
1990	0.30947508718066663
1991	0.10989680265431935
1992	0.18242836403797247
1993	0.11881031507126134
1994	0.16403943570293683
1995	0.024946037371420867
1996	0.025032796294166153
1997	0.0388840244541102
1998	0.03874074056004798
1999	0.019209527925851223
2000	0.08735644175538525
2001	0.20725649908059024
2002	0.36444072994908905
2003	0.6233642353984583
2004	0.7200794999035787
2005	0.5610277100156256
2006	0.34924853734797695
2007	2.751901197148465
2008	3.813675107431433
2009	6.226359496123108
2010	8.023060916770696
2011	14.134456945499402
2012	16.843933630594353
2013	16.650456321330825
2014	14.137292728997016
2015	13.889071592992341
2016	14.937322128704366
2017	16.319538204109868
2018	15.335494323515384
2019	21.988984068285816
2020	13.391797602475162