Year	% of total merchandise exports
1960	19.167942827973455
1961	19.014978420919014
1962	15.483870967741936
1963	16.45266594124048
1964	25.240335446921662
1965	26.312774489211378
1966	23.808724832214764
1967	19.745436275330768
1968	12.465902891434807
1969	17.084979356640034
1970	19.148289393688167
1971	15.170059844224582
1972	12.133928177039621
1973	17.569612272775036
1974	24.046468684731845
1975	17.778010331738223
1976	18.06197008340801
1977	24.629542840100548
1978	20.429717905360068
1979	20.1193707497884
1980	26.831894083423048
1981	29.77357168379825
1982	19.604185490687577
1983	28.20114217325129
1984	20.994008746526596
1985	14.769465604253549
1986	10.975040200529701
1987	10.249871657702696
1988	9.574149596503249
1989	13.49151922379834
1990	10.137041997704836
1991	12.05876010636133
1992	11.617997056819231
1993	10.283569250913699
1994	8.494246192423896
1995	14.064461061298472
1996	12.339717032745304
1997	12.742250581009149
1998	12.447696592101744
1999	11.085730471373878
2000	13.171614715966584
2001	13.660587645854278
2002	13.90368380680203
2003	13.519988388606341
2004	15.38741263221674
2005	15.857787682758007
2006	16.293324869856498
2007	17.60362939904945
2008	20.77730629251645
2009	22.936034875855675
2010	23.869924146158336
2011	24.20046674521871
2012	27.191297914613667
2013	27.52160769419944
2014	25.899552888879818
2015	24.67162728339421
2016	22.959872783415463
2017	23.070453246179284
2018	24.143992983871648
2019	23.92199515138293
2020	23.28585291967841