Year	% of total merchandise exports
1960	50.771417572329646
1961	54.85456722304387
1962	59.94879247110927
1963	61.248202255696015
1964	62.72389627795509
1965	64.45008374359234
1966	65.00602539071623
1967	65.09276687281528
1968	64.91092984271357
1969	66.04471406810215
1970	66.8584127910566
1971	67.23539843704324
1972	68.72312152231272
1973	68.1419842307299
1974	66.90323300034764
1975	61.74212176365768
1976	63.43199939089925
1977	63.42197824793367
1978	64.29318663710288
1979	65.90876605270945
1980	63.61732965459434
1981	62.7413612565445
1982	64.10960629260178
1983	65.25190199484814
1984	67.28081996338408
1985	67.9501157284692
1986	69.96762148046307
1987	72.84256179033899
1988	73.73475490048024
1989	73.48498750972877
1990	74.14552992174211
1991	76.1309518676417
1992	75.5299208928452
1993	73.95164631794283
1994	75.38376611124444
1995	76.1859625989049
1996	76.71073889161889
1997	74.39983349888853
1998	76.84535692876575
1999	85.58876072389174
2000	85.54615568683026
2001	85.63083661849407
2002	84.93235542229745
2003	85.45859680417917
2004	84.2003848996526
2005	82.60287695487472
2006	83.36192300202325
2007	82.17815068875838
2008	81.05552671423365
2009	79.98508097473713
2010	80.27418392756883
2011	79.84878003146078
2012	78.78503342686265
2013	79.09028774758168
2014	79.71721995641495
2015	79.43449498996571
2016	80.44915954040373
2017	80.33933635320886
2018	80.87589831679325
2019	81.51271718224012
2020	81.90341708779373