Year	% of total merchandise exports
1961	52.142857142857146
1962	43.56435643564357
1963	60.502423975319516
1964	48.170731707317074
1965	87.74193548387098
1966	91.53846153846153
1967	82.92682926829269
1968	45.059288537549406
1969	69.94800693240902
1970	61.19234778688756
1971	50.83492564592507
1972	46.101499976038724
1973	41.59669491039153
1974	34.882849694831656
1975	47.23301768022333
1976	23.257271963755517
1977	18.79063197264716
1978	23.945252932206262
1979	24.18990416297942
1980	22.69961653174265
1981	31.68050300257902
1982	56.40706225160995
1983	9.347866458620395
1984	7.592808798751624
1985	5.452999679017244
1986	8.593890054029885
1987	67.57246073122894
1988	6.357721119752835
1989	4.378947584514341
1990	5.97124234266246
1991	2.408320114979967
1992	10.233648034972514
1993	7.1763054078633735
1994	4.0730999926184275
1995	4.156418382009104
1996	6.9217122969513
1997	3.899914616294094
1998	5.504580000251673
1999	3.26167717609814
2000	77.96954166292551
2001	44.17595651620487
2002	9.308006122015517
2003	11.1179048598908
2004	45.78271542542809
2005	45.2800706200723
2006	78.06367005784787
2007	76.08100999519472
2008	73.88459855492337
2009	74.1906998739223
2010	67.23521522551424
2011	71.62979793150454
2012	51.124506135713446
2013	51.63728041429901
2014	49.14557766325434
2015	49.3618995490741
2016	61.48339794348144
2017	59.31406164697558
2018	16.112127111163037
2019	15.763494945360138
2020	10.07733921599543