Year	% of total merchandise exports
1960	79.99565869735893
1961	80.07668875013745
1962	79.89908195448453
1963	80.7328265571695
1964	79.28083861920008
1965	78.35123856370002
1966	78.67977445375203
1967	79.1614487493858
1968	78.35965300032713
1969	78.6783230391699
1970	78.26150895496737
1971	79.21026014050018
1972	76.39714365611253
1973	75.86677597672863
1974	73.78335184705111
1975	70.89513486534139
1976	73.44567829325146
1977	73.83049238354839
1978	73.85410674844705
1979	72.76179369940905
1980	70.76882891314472
1981	69.48228343656857
1982	72.34846588132905
1983	75.16078849381147
1984	74.67103709352702
1985	75.72583168637131
1986	76.23599458898029
1987	77.11454669011468
1988	74.87621746773667
1989	76.6547682541552
1990	76.34232890532392
1991	78.14000944531433
1992	75.70261660107688
1993	76.03895638717668
1994	73.71009625878033
1995	73.41835541976141
1996	72.49871156222306
1997	73.41521428888093
1998	74.15383982217485
1999	78.47598593420781
2000	78.74990140218381
2001	77.62897439304808
2002	78.4185382617412
2003	77.21761642665886
2004	74.62756018846385
2005	73.57341579285877
2006	73.19799895984065
2007	71.29523818646373
2008	68.94484369833856
2009	67.99633817565226
2010	66.80884311384541
2011	66.60485673358077
2012	65.84396554433233
2013	65.42483428207073
2014	66.52544740090693
2015	68.52775383770121
2016	68.88668738344823
2017	67.36040441532542
2018	66.96279795718021
2019	68.42458435582735
2020	67.31786897446005