Year	% of total merchandise exports
1960	80.27038683613344
1961	80.51020941533542
1962	80.40923858375831
1963	80.7213846531224
1964	77.21493954822407
1965	76.08846952718599
1966	77.9155376990195
1967	79.90700092877583
1968	78.79437325141357
1969	79.061037893436
1970	79.13153337596263
1971	78.63919824296298
1972	79.06680112428539
1973	78.92507849400502
1974	79.81188265924641
1975	77.68446758799952
1976	80.11349777336444
1977	79.69028196600777
1978	80.65118594974928
1979	81.84376529440709
1980	80.52422228146098
1981	75.51284782726681
1982	77.19822085867045
1983	77.81776379126262
1984	77.82408732780726
1985	77.84880390195497
1986	78.43371091854473
1987	78.57467589255151
1988	77.37859194928528
1989	79.41769682131061
1990	79.82411377555694
1991	81.92932266995601
1992	79.0779954386444
1993	79.42991454601946
1994	77.42594754361718
1995	75.57306025845281
1996	75.81440525744428
1997	77.03301786739277
1998	77.13154824636516
1999	79.37098027991199
2000	79.2035280818112
2001	78.06381796829434
2002	77.35355693898262
2003	76.67433829773994
2004	76.05995337143881
2005	75.04757644163914
2006	74.28529985901658
2007	71.33866829345428
2008	69.59265646671803
2009	68.08456735158315
2010	67.36792188210514
2011	65.23807320119303
2012	65.62220989315449
2013	65.13146607437382
2014	65.16206891575176
2015	66.19172221982942
2016	66.07373034965573
2017	64.58747479921836
2018	64.15379360936156
2019	63.525364282404276
2020	64.00734348837388