Year	% of total merchandise exports
1960	2.295385110146326
1961	2.159171277613679
1962	2.0901281639027975
1963	1.470853962632359
1964	3.3178405434393996
1965	2.8097456457870047
1966	2.441799049282899
1967	2.6201066446143515
1968	3.2750771483970023
1969	1.955284142639934
1970	2.2811411991266564
1971	2.142562624600958
1972	1.6111167295124993
1973	1.0455128945573264
1974	1.1286942851800879
1975	1.1144773601365963
1976	0.9098944727718408
1977	0.6298216044157873
1978	0.627463572333297
1979	0.8632387860551856
1980	0.9439033448767096
1981	1.02871407056967
1982	1.1233943251406107
1983	1.0017515217273718
1984	0.9750194728560844
1985	1.0192378331138998
1986	1.07123966589157
1987	0.8786317128362818
1988	0.9666649642217571
1989	0.9037117090408331
1990	1.037861695513918
1991	1.052023491900483
1992	1.1718448911316004
1993	1.1690686143034683
1994	1.0760309106360004
1995	1.6491548650001038
1996	1.5007406271710588
1997	1.7401160816473387
1998	2.1439464963252384
1999	1.478987052015608
2000	2.5339173851614207
2001	2.501973421788748
2002	2.4280559380194537
2003	2.5283160825258735
2004	2.7616964316631343
2005	2.732960480743192
2006	2.717650839093669
2007	2.7358022209854567
2008	2.5702043594377835
2009	2.8242732284538583
2010	2.587977833859607
2011	2.9824442444219725
2012	2.66743799894825
2013	2.650205677410848
2014	2.974680704509156
2015	3.2791379887768812
2016	3.234873106482742
2017	3.1982325895869095
2018	3.0045708075812696
2019	3.236985398770541
2020	3.545204701764071