Year	% of total merchandise exports
1960	2.2276039208684617
1961	2.2307330879436456
1962	1.8248121987300403
1963	1.7916551960012228
1964	1.7837384274560504
1965	1.935077826418885
1966	1.7100903151110982
1967	1.6914637117005762
1968	1.671016274627555
1969	1.8226634979707885
1970	1.8995904871303106
1971	2.0022373640532294
1972	1.837423958684122
1973	2.140000517460191
1974	2.7784861006206354
1975	3.1181235334201505
1976	2.0508938297859167
1977	2.136167270538603
1978	1.95282850246495
1979	1.6251467246020759
1980	2.041055202119721
1981	3.2549539960486005
1982	3.731809849907486
1983	4.107742003863385
1984	3.8827389110530666
1985	3.5804729485554687
1986	3.361295361059788
1987	3.180818452340512
1988	2.9144774454492666
1989	2.4929292281977142
1990	2.5069561713293513
1991	2.306538293886758
1992	2.2327511115613126
1993	2.1512731900163753
1994	1.6991443333722427
1995	1.8380179038933302
1996	1.7562119049012552
1997	1.7316282348298149
1998	1.8137055221457168
1999	1.6402806592638624
2000	1.612458962189791
2001	1.9928949821394673
2002	2.076720987747106
2003	2.0922451343148096
2004	2.31904930493093
2005	2.0562298385795605
2006	2.1341479601377253
2007	2.606396446816497
2008	3.0253265588239144
2009	3.456351334870121
2010	3.057968215905135
2011	2.5556364192566563
2012	2.7518848573087777
2013	2.7311670572744933
2014	2.917179258759062
2015	2.8204059286422374
2016	2.8639980955363473
2017	2.685638752309072
2018	2.5089962205999705
2019	2.4992824885242735
2020	2.3681993552315252