Year	% of total merchandise exports
1960	1.7813567593948267
1961	2.8837522441651706
1962	1.4128209217372132
1963	2.93839759384549
1964	2.458478340692574
1965	2.5168890658936363
1966	1.509888611925803
1967	1.2856603883100675
1968	1.2540055521439488
1969	1.4537142935197251
1970	2.5264847356531934
1971	3.575391457344191
1972	2.530345355534058
1973	3.371225063160635
1974	2.4297118577672294
1975	2.3253392534432367
1976	2.6269151775957065
1977	3.03831495887368
1978	2.8167121443521252
1979	2.8182782345465203
1980	1.9218111940843583
1981	4.685464290290135
1982	5.421830904623042
1983	5.022624558121383
1984	5.451815399784578
1985	5.226989301026232
1986	5.412854715324793
1987	5.632992952450784
1988	6.065279315721007
1989	4.173215930097794
1990	3.904500770062532
1991	4.459948219453789
1992	4.4089195327623
1993	6.32962958522201
1994	5.240617647373468
1995	8.18286167716233
1996	8.434413815555393
1997	9.567251937214163
1998	8.342612188827967
1999	12.201399903678467
2000	9.759506413383098
2001	8.649748684387145
2002	9.206655112151545
2003	12.858214808911633
2004	15.198462864436848
2005	21.70308185888608
2006	12.317599724341923
2007	6.361556925711431
2008	7.620753799190005
2009	7.6040384807968975
2010	7.936955121048738
2011	15.286239255913959
2012	21.017523599850982
2013	21.96400511547854
2014	21.126493901181707
2015	18.28140686950469
2016	18.683512139640094
2017	16.168309959739616
2018	19.223752319447975
2019	17.489379552489655
2020	18.51130645936658