Year	% of total merchandise exports
1963	1.752565432952842
1964	1.2663708193527439
1965	1.1342920802106542
1966	0.5178332460580671
1967	0.5310924369747899
1968	7.200542158468402
1969	0.8631161690429
1970	1.80063871712985
1971	3.4611410859832397
1972	1.2123096052222568
1973	1.3810823831700658
1974	1.6552075375604787
1975	3.3190842204776194
1976	4.847432540134351
1977	5.891022401886475
1978	4.734189635179734
1979	8.92138750280574
1980	30.15820698747528
1981	41.722219013005784
1982	36.93885482431522
1983	34.511556356292154
1984	17.293875487079973
1985	16.780542692687217
1986	11.958420451984866
1987	8.190995608782618
1988	6.293492925338769
1989	5.070174858208166
1990	4.726395002747271
1991	5.12654958465115
1992	4.571630654228496
1993	12.684922607024514
1994	24.188410688117994
1995	26.760643094595693
1996	8.250408742431748
1997	8.46604637469695
1998	10.822709168128005
1999	18.057086592145865
2000	64.1391050819368
2001	7.365451908278903
2002	15.51684022931763
2003	14.849425828814944
2004	10.197528223365609
2005	12.853179628169487
2006	32.227174860429834
2007	20.389568249139554
2008	16.617785921498516
2009	39.498112058985626
2010	47.9032740616218
2011	86.63638254086982
2012	83.67701124808555
2013	87.95348499105258
2014	83.38029321678175
2015	76.13087313987128
2016	49.50898509554168
2017	57.03149877196586
2018	66.00399636704964
2019	69.14389187097866
2020	81.11838019590579