Year	% of total merchandise exports
1960	32.04692411889488
1961	34.13520545927635
1962	29.214670753620126
1963	28.525053467766575
1964	29.710612958616235
1965	28.02935607232584
1966	26.63158556783161
1967	26.87412154392035
1968	24.974098957679267
1969	24.18062590102446
1970	23.022990810006647
1971	22.231922630298612
1972	20.69151455028741
1973	23.425802301634064
1974	27.63910636066661
1975	30.641205294424772
1976	23.92065708174905
1977	24.166065471676006
1978	24.509847779318648
1979	23.83010752688172
1980	26.018260849566477
1981	25.544599544599546
1982	22.985669709927194
1983	21.702986059612336
1984	18.944284115672303
1985	19.730919185479003
1986	16.201473525407163
1987	15.15021589077094
1988	15.069014180168894
1989	15.259281171540003
1990	16.20583458274962
1991	17.152508839696793
1992	18.83966500118708
1993	21.197499900458965
1994	21.31723030919385
1995	23.046165421336653
1996	23.68011146836592
1997	22.758130113820638
1998	20.01213487313767
1999	19.93086843564102
2000	21.219983113869592
2001	22.823029746929553
2002	24.420010642111148
2003	27.00976631540359
2004	28.340690459367078
2005	29.431426473342086
2006	30.374661396912174
2007	32.64841657069415
2008	35.14531936259748
2009	36.36474758084375
2010	38.808220915906375
2011	39.98032745780268
2012	40.08354684768726
2013	39.37503304921685
2014	39.028546761941605
2015	37.64363482644874
2016	37.209704311920774
2017	38.90760581916218
2018	40.1294973405733
2019	39.513242415451685
2020	41.166171477215215