Year	% of total merchandise exports
1960	20.227618301617287
1961	21.941139068035245
1968	9.258329273320092
1969	9.39135472657633
1970	8.497315082459119
1971	9.012987012987013
1972	8.063670411985019
1973	7.3508878705427465
1974	8.942435733218348
1975	8.939022150631374
1976	10.397367929659909
1977	9.430946785481925
1978	10.389123802387196
1979	10.640229372025994
1980	11.480352757828143
1981	13.100576700212082
1982	14.954066241076019
1983	14.916186801101805
1984	13.336306764712063
1985	13.68329376729551
1986	11.614849046054932
1987	10.877125051671003
1988	11.605673008558991
1989	9.611975418496819
1990	9.019077183210914
1991	8.423923944000963
1992	5.60495898583147
1993	5.424706607581097
1994	13.050171899202843
1995	13.821201424417248
1996	13.032669771045411
1997	10.654541323166459
1998	8.026727562342252
1999	5.703321430235767
2000	6.1011664907851415
2001	6.414592091908183
2002	6.7329868525271745
2003	6.711543831841745
2004	7.5802519275244435
2005	10.207891354978187
2006	12.797374058165795
2007	13.882619050075403
2008	14.410562277282338
2009	13.491118672596278
2010	14.896881841565818
2011	15.225114225542752
2012	15.900503524063241
2013	15.947438304977538
2014	14.453135451356871
2015	12.89229080085336
2016	12.775999039433275
2017	13.932741996028328
2018	13.337621897453166
2019	13.18415504010598
2020	13.304465738793628