Year	% of total merchandise exports
1961	18.91891891891892
1962	24.675324675324674
1963	31.521739130434785
1965	18.493150684931507
1966	26.41509433962264
1967	20.114942528735632
1968	24.401913875598087
1969	31.7691203038866
1970	44.23270874250226
1971	44.98803677118751
1972	38.006352308819935
1973	44.15589580433486
1974	52.02739876760564
1975	39.154504277805735
1976	71.95469023879978
1977	56.63522702347006
1978	45.77192357897235
1979	41.218544087401916
1980	49.96287307023085
1981	51.729782822219796
1982	63.78399956451525
1983	59.732851225163245
1984	71.46243258562997
1985	69.416182555945
1986	76.34397348569681
1987	68.1926469721604
1988	76.00781937851193
1989	65.32425913656745
1990	60.2199505860222
1991	42.32847244409621
1992	50.63887105475743
1993	49.40189636757273
1994	59.696767595839916
1995	55.35474464052401
1996	45.85073051165999
1997	69.38778021773709
1998	55.600326500670874
1999	58.895628061897966
2000	76.49304646369804
2001	75.46661107993847
2002	73.01029508577734
2003	9.771219455456452
2004	19.6644483181418
2005	73.66974716211722
2006	68.49140236233804
2007	66.64420501160828
2008	71.97489048320081
2009	83.94230323887368
2010	86.87006875973007
2011	84.05755693980845
2012	75.20012120630611
2013	65.79876190094929
2014	67.15229033694146
2015	69.1582632693233
2016	78.34417146024595
2017	74.87884501218898
2018	70.33910766706217
2019	68.54043521268378
2020	84.32159726394165