Year	% of total merchandise exports
1960	3.2452073302106337
1961	3.2933847924707162
1962	3.9770385169137037
1963	4.443083605000914
1964	8.51228428303253
1965	9.959509988092305
1966	6.910274516435068
1967	5.827359763024987
1968	7.00185737340977
1969	7.7811217804814525
1970	7.782484733732321
1971	7.744060442281854
1972	8.756884330841922
1973	8.416907959779344
1974	6.78943408269081
1975	5.086188268922802
1976	3.976583911397915
1977	4.055598233219698
1978	4.00358355069603
1979	3.548787437808815
1980	5.355630921315964
1981	6.010535368402667
1982	6.13606948435839
1983	6.199031365109075
1984	5.944107024067977
1985	5.381989597786235
1986	6.039287736974057
1987	6.629747292071843
1988	6.261482836926064
1989	7.286164208004677
1990	7.844301823257045
1991	8.078988647573219
1992	9.282072079710426
1993	9.92222348646075
1994	10.703779938215947
1995	11.15979493930447
1996	11.141881657437803
1997	11.610221003553054
1998	12.206426845838585
1999	12.45799674927907
2000	14.46561067541971
2001	13.42056249964347
2002	15.132532440446022
2003	14.257128046117264
2004	14.216526577367944
2005	13.655321230671458
2006	13.607176660460778
2007	13.726908443928773
2008	12.877434448498743
2009	16.75252068392375
2010	17.39715470578186
2011	17.565495275415113
2012	18.738459773930142
2013	19.719046518212224
2014	20.047592843703818
2015	21.951702742053417
2016	22.848489629838255
2017	20.39717802913212
2018	19.05607886212017
2019	19.811598039828908
2020	20.391098248558105