Year	% of total merchandise exports
1960	0.6191747872965692
1961	0.6246000988564717
1962	0.6736046260286207
1963	0.680096168606372
1964	0.5850524653164041
1965	0.5655083249583189
1966	0.7053357163364277
1967	0.6907029259433912
1968	0.635341341883065
1969	0.5940955529470376
1970	0.585015130661051
1971	0.5800122008183721
1972	0.617123590479539
1973	0.6074969447291179
1974	0.6743529117211053
1975	0.7562557907794693
1976	0.7050515922560868
1977	0.5987625644124216
1978	0.49357485381370575
1979	0.4486865300128708
1980	0.47559461552284105
1981	0.6232726848838859
1982	0.6540391996629026
1983	0.6876635494304048
1984	0.728592971641807
1985	0.817810882744556
1986	0.7150574531797617
1987	0.7698535939533425
1988	0.6904466010356747
1989	0.6373782607108959
1990	0.7312837003322689
1991	0.6720216110394647
1992	1.2539010360675054
1993	2.0999663431503603
1994	2.395598044451196
1995	2.6196131773070763
1996	2.8388258757067555
1997	2.9494059365849217
1998	2.652003246062201
1999	2.024968986175293
2000	2.1969169155281136
2001	2.196646283400301
2002	2.480342501781091
2003	2.8173951599934304
2004	3.07793599403399
2005	3.42271431797695
2006	3.7900926227583196
2007	4.44950946825138
2008	4.852452718430712
2009	3.768219082429499
2010	3.9761657483789516
2011	4.370951224588339
2012	4.658458522941699
2013	4.691964840683675
2014	4.341377394697061
2015	3.6281529798614627
2016	3.636689485936361
2017	3.907158165502945
2018	3.7796668823622115
2019	3.92492979171192
2020	4.0572830822934804