Year	% of total merchandise exports
1960	99.45945945945947
1962	38.90020366598778
1963	16.94915254237288
1964	20.408163265306122
1965	75
1967	95.26813880126183
1968	91.42242093061765
1969	98.74622707220804
1970	64.34807916181606
1971	90.57096247960848
1972	93.88025140588819
1973	95.18072289156626
1974	83.59830418653948
1981	62.96274003496588
1982	72.80988321767865
1983	71.20402986606113
1984	50.479233233543006
1985	58.648333684938144
1986	71.53654988222196
1987	64.70550699734189
1988	67.61663737246252
1989	56.58428807066696
1990	77.48806094292357
1991	58.413749590131125
1992	46.32684905259007
1993	51.309771309771314
1994	55.426098535286286
1995	57.77634961439588
1996	79.54474586841285
1997	18.09380042683879
1998	41.938504219177965
1999	51.855053696860445
2000	53.15535502834094
2001	50.40032746950336
2002	50.459624854623065
2003	51.44338871603845
2004	49.094703339108634
2005	61.3758022458622
2006	72.13194597417474
2007	70.94026155228389
2008	74.71178220227017
2009	77.49480118699171
2010	80.36122122558217
2011	80.4207752426531
2012	77.15004405915997
2013	80.93244436529154
2014	87.01995035022388
2015	83.44041447774407
2016	81.58361838916363
2017	81.40317505918246
2018	85.16160035337438
2019	84.47876998430111
2020	84.93950086343102