Year	% of total merchandise exports
1960	2.7926394293125814
1961	2.1784453048546997
1962	3.043046827009403
1963	2.3529411764705883
1964	2.3161050092503688
1965	1.9171464924198314
1966	2.095296691277003
1967	1.6415980359139664
1968	1.577220384968836
1969	1.24036704229405
1970	1.3753955619719127
1971	1.4048912786636396
1972	1.897119885153663
1973	1.3977890850397587
1974	1.482239944598475
1975	1.424633847439044
1976	1.4785703614387815
1977	1.35273665596976
1978	1.5137050734930955
1979	1.466735861991474
1980	1.490980170972761
1981	2.241525760723086
1982	3.4904645047378384
1983	4.901061352306733
1984	5.199660820698273
1985	4.471917637478447
1986	3.360843129136308
1987	4.023427509057386
1988	4.1129901378340925
1989	3.640449667405446
1990	3.363053638690372
1991	3.50045927861523
1992	4.2354929239420835
1993	4.693147411020771
1994	5.098782617295515
1995	4.009379695335271
1996	5.387604790246058
1997	6.118018153639705
1998	6.142914198389519
1999	6.601207873578831
2000	6.990543035751016
2001	7.022052069205159
2002	7.029903471538504
2003	7.263830717326545
2004	7.620002486810769
2005	7.86144781959595
2006	8.861547002180778
2007	8.906671071989008
2008	9.324334050026408
2009	9.672015779504246
2010	10.522217511049394
2011	11.930691445390963
2012	11.142368336213245
2013	11.011796327183808
2014	10.81776032906094
2015	10.988278131742916
2016	11.252539597080965
2017	11.633170520092117
2018	11.73380592318169
2019	12.170823330188767
2020	11.694519082593073