Year	% of total merchandise exports
1960	9.523809523809524
1961	8.955223880597014
1962	10.743801652892563
1963	17.857142857142858
1964	13.471502590673575
1965	11.016949152542372
1966	10.526315789473683
1967	13.333333333333334
1968	9.451219512195124
1969	9.200209095661265
1970	8.899844317592112
1971	7.6923076923076925
1972	6.462179868969625
1973	8.611759926881284
1974	8.114968271743189
1975	10.318655502680562
1976	17.75370232842602
1977	15.221005958154358
1978	15.575086868922824
1979	10.511678333215489
1980	8.958020217825451
1981	12.334282409467034
1982	8.577894583150824
1983	9.429184785600263
1984	11.986310051971099
1985	8.09375939096464
1986	9.493327982341727
1987	10.249073829055305
1988	8.242915908211383
1989	5.875095992853165
1990	7.312156668879824
1991	7.759021910687937
1992	8.448613644542052
1993	8.670526835210147
1994	6.587182706695824
1995	5.228494682423337
1996	4.125378905986773
1997	6.635258640597559
1998	11.046511896832927
1999	4.159954537720361
2000	3.9014298570253203
2001	4.8299054650058695
2002	6.377108549626807
2003	6.205067207794567
2004	8.177551867801366
2005	11.054977258901749
2006	10.445501345110026
2007	8.038686969357284
2008	9.132715002009997
2009	11.87802174131475
2010	9.968178829481541
2011	8.377452047864399
2012	14.954765373866449
2013	15.66299753628036
2014	17.313756760394703
2015	15.908305097719627
2016	11.26650866092943
2017	12.78499950970213
2018	12.632267662014232
2019	14.707855335683753
2020	20.086851029424764