Year	% of total merchandise exports
1960	60.204081632653065
1961	61.86440677966102
1962	70.07299270072993
1963	73.8562091503268
1964	63.86138613861386
1965	71.02803738317756
1966	55.017301038062286
1967	57.18849840255591
1968	55.38461538461539
1969	57.046657046657046
1970	58.56807511737089
1971	58.14606741573034
1972	53.13025210084034
1973	51.456480027908604
1974	36.85205711677642
1975	34.16120576671035
1976	33.243191037280276
1977	40.93881644934804
1978	43.82860435946981
1979	45.64028273846692
1980	47.7625498637387
1981	64.59623883577729
1982	42.98446312652974
1983	40.923248053392655
1984	47.30141833769671
1985	47.595754772915924
1986	36.02736079020096
1987	39.37907985272211
1988	34.65120382715081
1989	34.27620311991732
1990	42.28141517143797
1991	27.99122151527735
1992	32.96384184483638
1993	39.5950959190412
1994	41.91089066934596
1995	44.6427005236445
1996	46.01253602227167
1997	57.31000302170589
1998	51.311175222383184
1999	46.17583571732707
2000	44.368657568721964
2001	46.6305644057326
2002	43.69719576304691
2003	40.114269153065905
2004	40.854437201879215
2005	42.67740701626626
2006	40.72999615794655
2007	43.93486865080911
2008	41.73725513333417
2009	51.593823940061924
2010	50.45723412666241
2011	47.37965223383206
2012	46.089002232934355
2013	53.54273024696704
2014	51.48235627755574
2015	50.94421520504074
2016	47.96300366579997
2017	46.33213632708626
2018	43.135131304603874
2019	41.074403981667906
2020	39.95718278477987