Year	% of total merchandise exports
1960	86.73911331600912
1961	85.09803921568627
1962	85.92501030078286
1963	84.30592081882152
1964	81.03291634635545
1965	78.99454648028585
1966	80.24698449167145
1967	81.98356098150612
1968	80.89923469387756
1969	80.88269665255667
1970	80.87548432096466
1971	78.78755512679162
1972	78.09163889957388
1973	75.77079434729302
1974	73.37284210287963
1975	67.85686251875794
1976	72.84978875708352
1977	72.2769365123828
1978	72.49940904933231
1979	71.05240018793096
1980	66.64285210361422
1981	63.81946471831713
1982	66.75782882969105
1983	69.48882768745533
1984	68.96796246395644
1985	68.3421989342557
1986	72.37619028699918
1987	73.20889447048312
1988	72.05194235932278
1989	75.18862896310613
1990	75.28829314224743
1991	71.79820910311545
1992	64.9377130815833
1993	65.19305523508481
1994	64.75158371839757
1995	63.96444383577733
1996	63.920560926239666
1997	60.32243487772432
1998	59.89268191453673
1999	63.934077380534326
2000	60.8310035801599
2001	62.30589217163577
2002	64.7057456463932
2003	62.262389082565385
2004	59.80966719927563
2005	58.12913816863483
2006	57.340921853270686
2007	57.92419169165919
2008	54.475953765749566
2009	50.147964622597655
2010	48.24072480301117
2011	48.68531846757122
2012	48.90339296558161
2013	49.18973035748272
2014	49.51806346601511
2015	48.45758263469608
2016	48.86223537370366
2017	45.25129959361166
2018	45.305791923684716
2019	46.60062650855086
2020	41.85880078528456