Year	% of total merchandise exports
1960	13.338889859410068
1961	11.144933307320827
1962	12.354580997850343
1963	9.138377970106898
1964	7.336839407497189
1965	7.697452048387252
1966	6.425329272157596
1967	6.223424651956754
1968	4.503499077897363
1969	5.2373648694732395
1970	6.076634830935074
1971	9.182932225066754
1972	9.50350896055407
1973	7.911960643079703
1974	6.804882559644905
1975	8.75501893060664
1976	7.789979309129579
1977	8.257713463635064
1978	7.897496137412169
1979	8.357066795213713
1980	8.16228214060099
1981	10.64769561495059
1982	9.07351421340727
1983	8.992129035693733
1984	8.39681723865478
1985	8.576758119014126
1986	7.800785885090102
1987	7.283296025098708
1988	8.753640555869111
1989	8.101162497201855
1990	8.826702206159332
1991	9.594049596910773
1992	8.518248622590239
1993	16.04270380536296
1994	11.169138805986845
1995	15.160445213151919
1996	16.92642355695993
1997	17.61825937963839
1998	12.593343959425066
1999	15.366098904148354
2000	17.91106657750717
2001	16.38805925692025
2002	18.089349623644228
2003	19.53999978678548
2004	22.482421672153755
2005	26.52388197735499
2006	23.9967616828168
2007	34.099655924873915
2008	35.68626939511372
2009	27.900206682944546
2010	28.929639303440702
2011	28.375066076275058
2012	36.342363325365646
2013	32.44390861306323
2014	29.92458311795247
2015	24.24944162023985
2016	24.303727978440413
2017	27.86591521901013
2018	29.640153006588694
2019	25.84375586567595
2020	22.226933102015263