Year	% of total merchandise exports
1976	2.7518130070890616
1977	2.5443602780948424
1978	2.882065443706577
1979	3.9812183187318704
1980	3.9748547533582506
1981	5.798541300775493
1982	5.5420269885013775
1983	5.542026988288432
1984	5.542026988332377
1985	5.542026988748418
1986	4.9968330013185565
1987	6.168317997973541
1988	5.657044865507485
1989	6.0071812048969955
1990	5.153895405686166
1991	5.731513159754211
1992	4.563059012480827
1993	4.733152031848867
1994	7.229991905219216
1995	8.726832929326223
1996	7.911645484078929
1997	8.689842202173544
1998	8.960840854816112
1999	10.501181460439913
2000	5.613370442116322
2001	5.842163829836262
2002	6.432942735784011
2003	6.512264180140995
2004	8.059021977945212
2005	7.405861424282023
2006	9.358393169586147
2007	11.23903009240064
2008	14.301941448682923
2009	15.390033334982192
2010	20.166131611763838
2011	18.41596386283488
2012	17.222165457849083
2013	15.620436709075298
2014	14.244762440570524
2015	14.839849782620568
2016	14.809462074079901
2017	15.891947944986883
2018	14.300230584282087
2019	14.95273732536268
2020	13.366830763335871