Year	% of total merchandise exports
1960	14.640274076893794
1961	14.633969907407407
1962	14.229163667770262
1963	11.79344033496162
1964	11.585978601406868
1965	12.267635482894338
1966	11.448043016131049
1967	10.75121465055438
1968	11.027181688125893
1969	12.557770667541773
1970	14.925078182509843
1971	15.111857141502366
1972	12.163414994338972
1973	9.607264441491969
1974	16.628976136754947
1975	22.301634040095966
1976	15.669303892066402
1977	13.72522654874014
1978	14.233599227222301
1979	13.220914664957986
1980	12.994632765014632
1981	13.691863488608181
1982	9.895814685885115
1983	9.855541118680993
1984	7.935891802425106
1985	7.0236515000784205
1986	6.029656095207342
1987	5.920059792904427
1988	6.106484091210318
1989	4.97673585340907
1990	6.663320222422678
1991	9.233749872623017
1992	14.289238128291798
1993	16.120578939965526
1994	14.506021340120553
1995	16.657092759047345
1996	17.642675706536153
1997	17.973937148481134
1998	16.524061232461463
1999	16.39472045042506
2000	17.573601406569615
2001	20.08434867108347
2002	22.16926347816066
2003	22.76353055965966
2004	24.136546097922885
2005	24.69522692446674
2006	26.364832054162925
2007	28.204936714292234
2008	26.607796488170006
2009	26.55850701927501
2010	29.495008314229704
2011	26.997548741548442
2012	28.799915512606116
2013	29.91082769589641
2014	31.351628529612647
2015	28.49565082224051
2016	27.26077745835593
2017	28.418608969251753
2018	29.44646099687876
2019	30.629185225772094
2020	32.5963196128447