Year	% of total merchandise exports
1960	68.14080270702134
1961	67.74178769414029
1962	66.27335299901671
1963	68.3129743111075
1964	62.94932624786487
1965	60.58127261761158
1966	61.16775499293543
1967	65.33612566570226
1968	64.88708843482213
1969	61.2198441915401
1970	59.61699525545383
1971	59.78777759016404
1972	59.493711899703946
1973	61.30945047745904
1974	57.78031682687313
1975	55.83628071759974
1976	64.61309501602537
1977	61.27470134262927
1978	62.97983757105279
1979	63.33974364459534
1980	57.66013586411612
1981	53.38273597519678
1982	59.889514153457256
1983	62.79156622312885
1984	63.606300434657626
1985	64.63131099409581
1986	69.5150871365089
1987	72.81104030293221
1988	72.06647745403482
1989	82.42137678716442
1990	68.41194536152064
1991	72.8380523029567
1992	74.29146230135272
1993	74.4561032084133
1994	77.3696055325604
1995	72.95992970556145
1996	74.6049295307684
1997	77.73900614564224
1998	79.2556765455648
1999	79.49936320504256
2000	76.28464470760817
2001	72.90856121401697
2002	73.09651770266773
2003	71.91223295422814
2004	71.28603272932679
2005	70.00445603079598
2006	69.03017406801274
2007	66.7808224285097
2008	66.61313054765526
2009	66.09750820144782
2010	64.18601872277662
2011	63.70315686350014
2012	64.34095725576245
2013	61.63218594878692
2014	62.068263787254985
2015	64.6010221463768
2016	65.84959107367749
2017	64.67020644736765
2018	62.994470913916835
2019	62.86316694879457
2020	61.95755770465576