Year	% of total merchandise exports
1960	0.21525215252152521
1961	0.031026993484331366
1962	0.27898326100433973
1963	0.1969796454366382
1964	0.5292652552926526
1965	0.4721435316336166
1966	0.6340917568071615
1967	0.19665683382497542
1968	0.301659125188537
1969	0.4115515954126531
1970	0.5315781430785688
1971	0.35035450070781676
1972	0.13130998002412006
1973	0.2636960842806505
1974	0.596212426553045
1975	0.8868830748913851
1976	0.3411708907734213
1977	0.5958566143943758
1978	0.48127399492225614
1979	0.14962986297054653
1980	0.44407956114490427
1981	0.4057861317858795
1982	0.8583205366523883
1983	0.3638121121275374
1984	0.44333423891484086
1985	0.2536514600345089
1986	0.29239467997477114
1987	0.1535292519998435
1988	1.1150725972905813
1989	1.1150725978385525
1990	0.8587774359680077
1991	0.3924725609361029
1992	0.203070470788814
1993	0.27751234243517836
1994	0.21630845768398632
1995	0.3087436981014226
1996	0.5381126804699761
1997	0.9074852163131633
1998	0.5610447345674379
1999	0.4477445343189417
2000	0.2721431536861513
2001	0.22509247053537976
2002	0.27201591218511406
2003	0.3047484108033523
2004	0.5550695135325509
2005	0.3786437306543325
2006	0.26056744367789325
2007	0.48269565815958987
2008	0.7090915875751441
2009	0.3402031430107297
2010	0.36339622926581133
2011	0.17287587185623896
2012	0.21133232370293076
2013	0.43279825974905867
2014	1.0199120414453386
2015	1.0268688939881783
2016	0.5528837348044495
2017	0.7012027411147685
2018	0.8855194362751191
2019	0.3245457201274529
2020	0.24279764635988604