Year	% of total merchandise exports
1960	1.0341533239001042
1961	1.3441478454111593
1962	0.9499261433647035
1963	0.9441037806355632
1964	1.130628003926507
1965	1.2594311462956824
1966	1.0462626376740882
1967	1.1366557204648395
1968	1.1254797181517615
1969	1.1079617499937955
1970	1.214083087907848
1971	1.3801901274341557
1972	1.1980838806212235
1973	2.0454901455207644
1974	3.0345823825119704
1975	3.0727229741217976
1976	2.120304891081062
1977	2.2274301383883452
1978	1.8589213309894097
1979	1.6301001062616591
1980	2.1254738458277083
1981	4.355051144639743
1982	4.942262813060464
1983	5.0482158929258265
1984	4.739399088904727
1985	4.48341962162765
1986	4.197106346500018
1987	3.9965244155158905
1988	3.500194843207295
1989	2.7536676137503013
1990	2.6461212087239936
1991	2.217153790465785
1992	2.192942661098477
1993	2.0852603737282505
1994	1.5667866104573718
1995	1.6879582164166254
1996	1.6826661935681761
1997	1.639938726201325
1998	1.7125729449851732
1999	1.5814062446186865
2000	1.416022497547227
2001	1.7251797363974504
2002	1.8030811540085507
2003	1.8591337275293103
2004	1.9800061643789673
2005	1.893042674772147
2006	1.9525060288844054
2007	2.2431372843423376
2008	2.3889341694088335
2009	2.913304538918045
2010	2.6837952867841697
2011	2.5046239194347937
2012	2.663242716253703
2013	2.643064694263602
2014	2.923763783235598
2015	2.8533317087756758
2016	2.9726878745959833
2017	2.828407866537147
2018	2.6057114323123796
2019	2.4815528295988742
2020	2.3798237419858133