Year	% of merchandise exports
1962	16.448279520655802
1963	16.901028169138176
1964	9.426523150572184
1965	19.093398197508048
1966	29.22279960922375
1967	33.37535017231187
1968	43.590520941980344
1969	12.244440516092954
1970	23.88727169859321
1971	26.653824169530736
1972	38.11049339940447
1974	50.63378559407479
1975	47.02356007530186
1976	52.02848168946376
1977	58.101384338020566
1978	58.289162443810284
1979	51.96778936740451
1980	68.57697887312911
1982	57.29595076621107
1987	85.86574554164545
1996	61.15555065669363
1997	88.74174457240721
1998	51.19615382114143
1999	44.68564656003093
2000	36.0702661532583
2001	13.8804331190544
2002	18.115212256839893
2003	34.82157862763938
2004	35.9354795017626
2005	24.472186293327105
2006	16.691395003199705
2007	13.831836058443075
2008	10.635875445264183
2010	8.746655630232471
2011	9.37879450813212
2012	15.774956131868459
2016	10.034200646052426
2017	7.857754976472693
2018	13.317141810699958
2019	11.9513574692677