Year	% of total merchandise exports
1960	1.9242951045832968
1961	1.9084151128989892
1962	1.7553864036716074
1963	2.0626252955987647
1964	2.139920121438993
1965	2.093016911305749
1966	2.148746047401482
1967	2.2115279129994145
1968	2.1718007704035975
1969	2.18341326789083
1970	2.028022014054372
1971	3.0478301427205765
1972	2.055736875036025
1973	1.9038618532293414
1974	0.5966194866211434
1975	0.6774034247749666
1976	0.5218922732009327
1977	0.4011769918883542
1978	0.6053708837659253
1979	0.4331254694645012
1980	0.636042356448977
1981	2.0186323978518894
1982	1.5114225940795338
1983	1.3345953338322791
1984	1.355699031536592
1985	1.0859130686826053
1986	2.229610258022598
1987	2.291068136296257
1988	2.3945573046527566
1989	2.622606641959509
1990	2.5716193986722704
1991	2.7829098939244585
1992	3.327524278661447
1993	3.3066378103196166
1994	3.5768559894761074
1995	3.3473681256265144
1996	2.725775613252603
1997	2.6554808801150163
1998	2.8378913369270995
1999	2.0803838589780077
2000	2.3365717529128913
2001	3.1183421054988463
2002	3.2580521351888345
2003	3.6211749456793187
2004	3.9310823308260487
2005	1.5448765475372968
2006	1.9904730320570878
2007	4.930471842398634
2008	6.418246523768318
2009	7.382655585947724
2010	5.045473891572047
2011	1.814798759493937
2012	1.7497283697085773
2013	1.7134881293662936
2014	1.4098604323429123
2015	1.672434959317286
2016	1.573292095873645
2017	1.7327506075075705
2018	1.3369392855362277
2019	1.2201752658268226
2020	1.8312010772497735