Year	% of total merchandise exports
1960	2.1099233024371467
1961	1.7747728713289668
1962	1.8365511037298454
1963	1.858299901597154
1964	1.417489181422714
1965	1.4535857483631933
1966	1.9496109185684791
1967	1.8060410504615936
1968	1.6330197229641394
1969	1.5498925718238843
1970	1.3412875237811963
1971	1.313020092374252
1972	0.8673873832473604
1973	0.9835757497036006
1974	1.3223227228304002
1975	1.423847685842521
1976	1.442541791570683
1977	1.007224726697219
1978	1.0587592907754368
1979	1.2161707833138389
1980	0.8830719798833514
1981	1.4876725368871966
1982	1.705383238968794
1983	1.6348811734602187
1984	1.1461741776517904
1985	1.7625335832614824
1986	1.3270311826294936
1987	1.2386935364143732
1988	1.184995016460781
1989	1.6400905051835402
1990	1.6190458131523484
1991	1.5301183334908601
1992	1.9197773668840492
1993	2.055885277860529
1994	2.3814071284382865
1995	3.059345205952934
1996	2.6242129586322833
1997	3.225487730209873
1998	2.342115625897347
1999	1.9069492708201459
2000	1.9064663990499247
2001	1.9432330207063802
2002	1.9492569130785036
2003	2.143540951633094
2004	2.2765188137543424
2005	2.8075909881171954
2006	2.882762114943549
2007	3.239684793729727
2008	3.2096465331443613
2009	3.55123893054256
2010	4.154166694611968
2011	4.4916186582883055
2012	5.31052253488462
2013	5.586962674752138
2014	5.610951475252497
2015	5.769557083260907
2016	5.5087581851993
2017	5.862905226060998
2018	5.821786045872536
2019	5.723767324284088
2020	5.183213745259761