Year	% of total merchandise exports
1960	0.1765993261858557
1961	0.4044353226917055
1962	0.4795425928310895
1963	0.3812716905464752
1964	0.9781775350921191
1965	0.9887081440022276
1966	0.8600280811837999
1967	0.28719864063783596
1968	0.16237029669009914
1969	0.18445989622574682
1970	0.2059417794048378
1971	0.6009480219532346
1972	1.0945932752400949
1973	1.013704059508552
1974	1.0305864962342566
1975	0.691899472969065
1976	0.4277938438132454
1977	0.980203468678466
1978	1.02418020209342
1979	1.1234458501164497
1980	0.8865024651809359
1981	1.1658944354177843
1982	1.1587667266935113
1983	1.7073627597970127
1984	1.1837380439582679
1985	2.0330862162763292
1986	1.9420880524155866
1987	1.6623979546063716
1988	2.6010012446324358
1989	2.311198494978868
1990	1.986469139111836
1991	1.613375782605382
1992	1.823274370948054
1993	1.9691778464018583
1994	1.9568253460600944
1995	2.2967277034002005
1996	2.1910228579754136
1997	2.1853422795817776
1998	1.5337317013934626
1999	1.332860742271403
2000	1.6328170877523345
2001	2.20420351016925
2002	2.646898242374814
2003	3.847434506661925
2004	4.0931450181883395
2005	4.356660169131767
2006	4.403122339261577
2007	5.755464807875301
2008	5.992779354861826
2009	8.320628293143438
2010	9.699003069889782
2011	10.573606595077715
2012	10.621632105635143
2013	11.371525211839108
2014	10.690399705968685
2015	10.729559728651466
2016	11.24564119637589
2017	12.280165394067579
2018	13.718173251439088
2019	14.207062927406591
2020	16.135073472849474