Year	% of total merchandise exports
1960	0.4351748659979834
1962	1.173781429542225
1963	0.9085402786190186
1968	2.837693371902905
1969	1.0796500177574015
1970	1.2519119291525815
1971	1.4894210146040632
1972	1.4976795549856485
1973	1.3323144939006084
1974	1.5465472155295616
1975	1.4272480682505255
1976	1.8225573705233349
1977	2.168025608503956
1978	1.8218959463772741
1979	1.5194236355564568
1980	2.816671642755789
1981	2.5437363327666773
1982	2.358599707810337
1983	2.1237168802543014
1984	1.7533866092104535
1985	1.5295832758364758
1986	1.8606311416530137
1987	1.1676634850456402
1988	0.9129403338698151
1989	0.8785327882961557
1990	1.012210193403573
1991	1.0657899836227498
1992	0.9869527732736888
1993	0.7429524820922903
1994	0.6420200557014614
1995	0.941503609344053
1996	0.8805766752382853
1997	0.8458822457352695
1998	0.8979510009897649
1999	0.8221859145221954
2000	0.9813285375889196
2001	0.8614402992792999
2002	0.8607096007794345
2003	0.8104836761977349
2004	0.753133282169224
2005	0.8037344690583546
2006	0.978312066520183
2007	1.0921754921226947
2008	1.4288396355931952
2009	1.374477272895563
2010	1.6645175719248846
2011	0.7492563508027649
2012	1.7478348156428398
2013	1.893311462662523
2014	1.8818521458704187
2015	1.5298904619804854
2016	1.0762365590910328
2017	1.0339080857003928
2018	1.2600841863494816
2019	1.1521045889664139
2020	0.6363939063319544