Year	% of total merchandise exports
1960	0.9802630408086993
1961	1.0916048585148423
1962	0.9539356818075412
1963	0.8797325287980319
1964	0.9673400067572788
1965	1.0423518481085898
1966	0.823466887876763
1967	0.685623141614745
1968	0.7493227053256433
1969	0.7009794483098185
1970	0.5478048562942577
1971	0.7175523849772371
1972	0.7184945913243014
1973	0.6620827057048306
1974	0.8915864045733431
1975	1.1875167489133491
1976	1.1012536911713695
1977	1.160477278542074
1978	1.3341418251570702
1979	1.1025095821477995
1980	1.3864728968144802
1981	2.100203485049704
1982	1.899720206059013
1983	1.614430804195651
1984	1.740832729219191
1985	1.7932474644868384
1986	1.3021937350618291
1987	1.5429672200773228
1988	1.5886947292544764
1989	0.9890422255547383
1990	1.1622053678831668
1991	1.0584311283870376
1992	0.9803578044387405
1993	0.9928180069618762
1994	0.8754534265184741
1995	0.8867562794637095
1996	0.9854473174822286
1997	1.0167091963047235
1998	1.122426409330384
1999	1.0341479397885507
2000	1.0986894464489543
2001	1.241433549816437
2002	1.186083022375938
2003	1.268518742911366
2004	1.303006129664446
2005	1.3987929019197094
2006	1.512180935861166
2007	1.696431628757334
2008	1.782073204024802
2009	2.06484884243148
2010	1.9816038743773312
2011	2.140104947180059
2012	2.171709881046972
2013	2.237518755202062
2014	2.4570817243212946
2015	2.6504228660254543
2016	2.4473562528799535
2017	2.351057533948574
2018	2.2444898995134386
2019	2.4181600592587014
2020	2.4083678517982916