Year	% of total merchandise exports
1960	0.7731958762886598
1961	0.16556291390728478
1962	0.8305647840531563
1963	0.3614457831325301
1964	0.6402048655569782
1965	3.4954407294832825
1966	0.1366120218579235
1968	2.262443438914027
1969	3.411048228346457
1970	3.014069416640821
1971	6.604976717976095
1972	4.011420277676986
1973	2.9193747241206105
1974	4.988956778281127
1975	1.7419903331899456
1976	3.0348631141530187
1977	3.2743487045904858
1978	3.2363179730094895
1979	1.3562016652744469
1980	1.656118340106633
1981	2.5342027551300195
1982	1.8455215640788285
1983	1.4788822751691706
1984	1.842625262714852
1985	1.035116844516138
1986	0.8140726227067451
1987	0.9020124497236106
1988	0.986417785878789
1989	1.3503426749021925
1990	1.955500563977611
1991	1.7835715058272745
1992	2.7335657616695497
1993	1.5994313135126903
1994	3.5193969166961168
1995	3.9023833099477905
1996	5.004256929730685
1997	5.505761843763276
1998	6.0343808678200315
1999	6.393881285796656
2000	7.199063749378433
2001	8.614531971929347
2002	6.879882002539037
2003	9.623750560634713
2004	8.452930033718177
2005	8.35223324044946
2006	8.406718727286524
2007	10.61694585876318
2008	11.380783863934369
2009	12.539666220857335
2010	13.45173772915865
2011	15.53717620751672
2012	18.64810698666855
2013	16.37539284627158
2014	14.7108419623913
2015	17.28524352203105
2016	18.234332360971585
2017	20.023440226253822
2018	21.74827344433234
2019	22.16389528029312
2020	23.48261067376921