Year	% of total merchandise exports
1960	4.027152076344115
1961	3.8500557308079957
1962	3.7474570402702314
1963	3.9501654632717056
1964	4.20932817471752
1965	4.269244138827919
1966	3.717473670605488
1967	3.7702387376902022
1968	3.507814361747455
1969	3.4687941622980785
1970	3.564964780390836
1971	3.627283137851963
1972	3.042448481774534
1973	2.9426070878207344
1974	3.014915042270791
1975	3.4333102701110416
1976	3.0816816465520183
1977	3.2149046173767535
1978	3.105959479529275
1979	2.5685105503146155
1980	3.1016384001898274
1981	3.258022140694336
1982	2.95852666310526
1983	2.394859123240265
1984	2.171441537614527
1985	1.9902656966330101
1986	1.7872513762030466
1987	1.681224657948731
1988	1.599034144378535
1989	1.4773183281466902
1990	1.4351980339205674
1991	1.4568580711697572
1992	1.457877856008922
1993	1.3298893328280224
1994	1.1912344751651098
1995	1.244688679283315
1996	1.218542024177937
1997	1.1540207743558508
1998	1.2347237486769576
1999	1.0707092809888243
2000	1.0969774984441394
2001	1.1696461718125948
2002	1.1359880944277163
2003	1.179049362549653
2004	1.2258820751223922
2005	1.2885514290576316
2006	1.4244092046234154
2007	1.3892290077982414
2008	1.495140978109899
2009	1.5096476955890108
2010	1.5122277781989624
2011	1.6289573554934396
2012	1.6046728618833588
2013	1.6512650551909531
2014	1.6498680891565487
2015	1.4691376129238078
2016	1.3123147426566824
2017	1.2776385022547556
2018	1.280844817047123
2019	1.284522870572064
2020	1.2018301223831158