Year	% of total merchandise imports
1961	0.06777363605557439
1962	0.03911597887737141
1963	0.14126510751844296
1972	0.41864567062998737
1973	0.3635204081632653
1974	0.22286629068879288
1975	0.07624732808508419
1976	0.5835417410980112
1977	0.8760674306446617
1978	2.5213162803090863
1979	4.407720030349013
1980	5.950387476147825
1981	1.878884912412884
1984	4.69174653125447
1985	3.231865284974093
1986	2.6776617422312787
1987	2.8548810053931026
1988	3.493914208059243
1989	4.111001331672322
1990	7.785649057752442
1991	5.9526617913029805
1992	6.222287986064154
1993	5.4212902411104515
1994	2.497509800403902
1995	2.0130629437492327
1996	2.2197047256494944
1997	1.6912886364431632
1998	1.171865171343828
1999	1.704868829899186
2000	2.6519886677849254
2001	1.2429780322337485
2002	1.4476653970940896
2003	1.680118124860453
2004	4.062751188650994
2005	4.64526992386142
2006	4.8699873663256055
2007	2.768482697503503
2008	2.8085327889589102
2009	0.6633770239851215
2010	1.0038910096880747
2011	0.9343889697702112
2012	0.37614997267155414
2013	0.15092794866309445
2014	0.7225165770914237
2015	0.30763862583410584
2016	0.16374955673433242
2017	0.15236130075327156
2018	0.40135487245726204
2019	0.46904509374128317
2020	0.427538168899982