Year	% of total merchandise exports
1960	1.707423464664263
1961	1.8040829224271366
1962	1.786548340330452
1963	1.5688134971871874
1964	3.3721734130879817
1965	3.6779652903676476
1966	2.78317048781972
1967	2.379306218424507
1968	2.93944048971026
1969	2.208757905331569
1970	2.350093483132645
1971	2.731932672117339
1972	2.341727241923961
1973	2.06196767763508
1974	2.0059314347385775
1975	2.1595098303869986
1976	1.7258366664756473
1977	1.9102151126221965
1978	1.8693368070586722
1979	1.6230952259628944
1980	1.6866700451331291
1981	2.378876927146332
1982	2.1390529025561458
1983	1.896642551646482
1984	1.9764977695867176
1985	1.9678744382420101
1986	1.786956396759091
1987	1.8393513803370718
1988	1.9601323932004988
1989	1.559780531493863
1990	1.7672895824864872
1991	1.6089850860424095
1992	1.7305593071110132
1993	1.6004099567513272
1994	1.5259141750357474
1995	1.7333215313063421
1996	1.694323527945329
1997	1.7368272350012715
1998	1.8210437496569218
1999	1.6880594055399114
2000	1.8311334799814813
2001	1.9250583382360236
2002	2.062564258252741
2003	2.080902619674146
2004	2.150251186523543
2005	2.221978313430999
2006	2.2648711371264643
2007	2.4261154819590973
2008	2.567930040784716
2009	3.0137687857587445
2010	3.045032043486127
2011	3.256610067779605
2012	3.288381181723024
2013	3.343894176948279
2014	3.5280279694683823
2015	3.5877393870289107
2016	3.2746042659990473
2017	3.0685201246628746
2018	2.956127478808477
2019	3.1592060470859002
2020	3.1639826102009447