Year	% of total merchandise exports
1960	76.87513091351482
1961	76.79592308280843
1962	76.91847999989099
1963	77.52519393162774
1964	75.20190809476543
1965	74.3950285404231
1966	75.98836549856549
1967	77.2421136712167
1968	76.77627155214775
1969	76.59571743740294
1970	72.34437453575602
1971	71.57210779530372
1972	70.09220107939939
1973	72.1687910256737
1974	73.78185357932183
1975	70.09122103274292
1976	73.13036018010006
1977	72.78191237985529
1978	72.93249305509639
1979	74.93166251779311
1980	74.65782237006549
1981	71.74462444349588
1982	73.29234777304164
1983	74.50184471743253
1984	74.43259750071675
1985	74.5095109014886
1986	74.56924586538848
1987	75.749832265602
1988	74.78548329057287
1989	77.29379185750605
1990	78.66002473629933
1991	81.10196364646724
1992	78.51441751541253
1993	79.12550043226777
1994	77.19884889489339
1995	75.5168262808702
1996	75.3713656760161
1997	76.61479477823767
1998	76.91301588807927
1999	79.58663355020765
2000	79.37603640093049
2001	78.31940621556953
2002	77.73608494700915
2003	77.11277188728457
2004	76.37854223092985
2005	75.43522616430477
2006	74.83757993884787
2007	72.054366066276
2008	70.39528849191218
2009	69.09052341136389
2010	68.27609646329213
2011	66.32211254944292
2012	66.42706464179886
2013	66.0729916754448
2014	66.34616982905708
2015	67.40657043743474
2016	67.30521615000967
2017	65.89554188909133
2018	65.59123734433919
2019	65.05199792174677
2020	65.4478362848282