Year	% of total merchandise exports
1960	8.642868628396847
1961	6.835295585971628
1962	7.832238504295098
1963	7.480756026164577
1964	12.173757597425814
1965	10.49069099290665
1966	9.856579856173568
1967	9.52165277641677
1968	10.520401464985095
1969	7.044465281659559
1970	8.541580158327006
1971	8.825382251297551
1972	8.952601560631381
1973	8.875221483882076
1974	9.82179761917417
1975	10.507941518919452
1976	8.800531979169733
1977	8.148828225964003
1978	8.232051625394792
1979	8.139871095957792
1980	9.05315813618923
1981	12.898281873171848
1982	14.852732739497046
1983	15.921951802075268
1984	15.36467518063948
1985	14.91823277758933
1986	11.878797168628482
1987	13.194474763644262
1988	13.757215088659077
1989	13.019117678685257
1990	13.533481567188682
1991	13.043494201170569
1992	14.629238814442683
1993	14.808075538792592
1994	15.00908712883929
1995	15.114479900769965
1996	16.67924677254241
1997	18.119479065026123
1998	17.90525501833722
1999	18.034034923544848
2000	26.331017414160975
2001	26.134052988728833
2002	26.245585510891388
2003	27.49623629366328
2004	28.281317791161637
2005	29.018074379508285
2006	30.282934018105067
2007	29.803798422883915
2008	30.6473183415908
2009	31.343396877749583
2010	32.727355280153766
2011	35.44755556003131
2012	34.97035421810048
2013	35.69557962800038
2014	36.81006758190935
2015	36.777242335129294
2016	36.295328082638825
2017	37.72223309356928
2018	38.18785077712857
2019	39.2896414539757
2020	40.19540912826693