Year	% of total merchandise exports
1960	6.726647261180206
1961	5.871871709727059
1962	5.113935451737924
1963	4.762698317315747
1964	4.462947729890828
1965	6.67386363971936
1966	7.137323034301411
1967	4.632882552510279
1968	3.7400182459715268
1969	3.528501598083728
1970	2.664565820591952
1971	2.944266986207943
1972	3.1581094039636564
1973	1.8068242322478656
1974	2.9497914844730926
1975	3.3390268716225378
1976	2.6746598646637647
1977	3.8175066258152133
1978	4.4317072751629505
1979	3.9740559272483376
1980	4.503389515030487
1981	6.863641937586584
1982	7.780632541121927
1983	8.029205866995753
1984	7.901397511213176
1985	6.530969497624442
1986	7.094447485493019
1987	7.2240576478046785
1988	6.588903854934259
1989	4.583648022860098
1990	4.754231577958315
1991	4.207742249172767
1992	5.681108684456743
1993	6.164895436443583
1994	5.385922661397902
1995	5.72753052336354
1996	5.430261080531449
1997	5.766268830875619
1998	6.698885616056733
1999	6.432033049436186
2000	6.48860861017402
2001	6.995785459965314
2002	7.453579704987147
2003	8.15693017170927
2004	8.83926673374603
2005	9.686609938652017
2006	10.940004658279104
2007	12.997098881773999
2008	14.686725667111572
2009	14.343693071069266
2010	15.159207818762116
2011	16.02239958009767
2012	15.994843362715802
2013	16.18169484589363
2014	16.76015796824811
2015	16.290074503587707
2016	16.40639544889251
2017	16.71512621188369
2018	16.55295949024583
2019	16.758183948256647
2020	15.648726964655493