Year	% of total merchandise exports
1960	3.9628491382773405
1961	3.791015475206436
1962	3.7103284780658665
1963	3.9743112391582542
1964	4.036810580379164
1965	4.014826895277808
1966	3.6014392910533086
1967	3.8004888056395467
1968	3.51482099587003
1969	3.443724869506152
1970	3.5114077889842594
1971	3.394846389164192
1972	3.0399805947597254
1973	3.0490096669874176
1974	3.2579786028986133
1975	3.618402234083324
1976	3.411849156682219
1977	3.729769664603846
1978	3.4504923370278933
1979	2.9128154167057807
1980	3.486697297166269
1981	3.797287032918939
1982	3.427397468416636
1983	2.806036913297324
1984	2.6230985930479758
1985	2.369540828248311
1986	2.098321163988195
1987	1.8911558173870886
1988	1.8652705303834698
1989	1.757421791281247
1990	1.6191816352354633
1991	1.5427416389306396
1992	1.5704941848989957
1993	1.4404555427175199
1994	1.249447437522814
1995	1.361078762391462
1996	1.3221446408928292
1997	1.2253058941241903
1998	1.3412151491663713
1999	1.1810741318585318
2000	1.1919315481608748
2001	1.2260624095078605
2002	1.1777614105364669
2003	1.193816944104178
2004	1.1678115059127314
2005	1.2298186658681451
2006	1.2570133204122766
2007	1.3043413914796975
2008	1.386632893438625
2009	1.4977126216573493
2010	1.4902290994469607
2011	1.6102247034764379
2012	1.6020834894254246
2013	1.6482809562966574
2014	1.6194722868476834
2015	1.5429771989864909
2016	1.334441972391932
2017	1.3289652988960603
2018	1.307648941571134
2019	1.3118615140240106
2020	1.230279633961396