Year	% of total merchandise exports
1960	0.7126986727997642
1961	0.7204193122006821
1962	0.7418375661937877
1963	0.7584350232733678
1964	0.6498723592254975
1965	0.6222702603707622
1966	0.7720431985989009
1967	0.7384321923010018
1968	0.6681445082509886
1969	0.6208182114605177
1970	0.6070179133626117
1971	0.5924068055631269
1972	0.6232335628626752
1973	0.6323159215187314
1974	0.7388267512184464
1975	0.8531634070465987
1976	0.7950668748103009
1977	0.6683932901346205
1978	0.5223421015453175
1979	0.48356810631042696
1980	0.49013467143183526
1981	0.5272906325007342
1982	0.5354224419747053
1983	0.5549748115641076
1984	0.59484021734197
1985	0.6981985056973892
1986	0.6632004718830142
1987	0.699492550809874
1988	0.621131800453261
1989	0.5807566087765961
1990	0.6864725786987553
1991	0.6623971990109441
1992	1.013307732573162
1993	2.0242783013477577
1994	1.8318361889161416
1995	2.003295119719383
1996	2.3060149886145664
1997	2.5003131365408
1998	2.2657022807906912
1999	1.6880516808474761
2000	1.809403450549768
2001	1.8801105202158535
2002	2.122739913144671
2003	2.419894363725625
2004	2.7878089454664474
2005	3.0794339004676843
2006	3.47092802806886
2007	3.933401151106887
2008	4.3685180735713685
2009	3.5650804475469666
2010	3.7808297870364953
2011	4.1864686779999865
2012	4.324271460905367
2013	4.427096421025662
2014	4.00237687537977
2015	3.267699206987408
2016	3.253111118527662
2017	3.4783365891553233
2018	3.3385959570741615
2019	3.410236510423799
2020	3.5639977643097938