Year	% of total merchandise exports
1960	1.6634019459876046
1961	2.804565159692117
1962	1.2606423795081667
1963	1.6032436449476515
1964	0.9511128019783146
1965	0.736512445148486
1966	0.5953745933871804
1967	0.3808056510395849
1968	1.2092792796027474
1969	1.615001118029245
1970	0.8433724780338079
1971	0.9271043721515653
1972	0.6457673244150187
1973	0.4774208001471726
1974	0.6318483563944652
1975	1.3734527369507592
1976	1.66797018114398
1977	1.3274947722551005
1978	0.9676689268965014
1979	1.3527688909593503
1980	1.0679379241365103
1981	1.4946139954564939
1982	1.7826457354932859
1983	1.8701772397808094
1984	1.7048081085721676
1985	1.5765272230371632
1986	1.8879692877817524
1987	1.5424636492478327
1988	1.4717336205819063
1989	1.4488703757502024
1990	1.2178176663685119
1991	0.9774124901272444
1992	1.0646676987241042
1993	0.6719473589942117
1994	0.8317697571409157
1995	0.7397830114775383
1996	0.6940014107427038
1997	0.5597908714163192
1998	0.6444773681579696
1999	0.4986840447282583
2000	0.5079469252501843
2001	0.5169578695878211
2002	0.428523258080945
2003	0.3747066799390348
2004	0.4063913880221614
2005	0.44442520021842596
2006	0.43271687096812556
2007	0.43341557857764934
2008	0.5307138061891388
2009	0.46310982662775385
2010	0.563072606683299
2011	0.5640010401106939
2012	0.7001687279326793
2013	0.7204701293393394
2014	0.6980259142380855
2015	0.7313588362702076
2016	0.6832166673833346
2017	0.742484013806213
2018	0.6902821834178928
2019	0.7099315549180949
2020	0.6502283842868711