Year	% of total merchandise exports
1960	1.3885385166054243
1961	1.5994481991285816
1962	1.8050547850076488
1963	1.754205439039264
1964	2.4249254567463305
1965	2.5491266502682732
1966	2.5658266151416522
1967	2.119494457045713
1968	2.209247444023432
1969	2.217649148653825
1970	2.4642670436450347
1971	4.0287674563378495
1972	3.787374343055568
1973	4.812810450831439
1974	6.079730893710053
1975	6.171126475446007
1976	4.987766017173449
1977	6.083749502212771
1978	6.009900785352515
1979	5.9274807857658
1980	6.3137529415718205
1981	6.74395676679899
1982	6.43756303779111
1983	7.104119662638519
1984	6.972895537912084
1985	8.151067488917334
1986	7.239742540584714
1987	6.65627722710133
1988	7.374400426720047
1989	7.032794156152866
1990	6.438877572817154
1991	5.574184722603639
1992	6.24141245961079
1993	6.283017086892702
1994	6.438192883018758
1995	7.269619480882026
1996	7.0645755937761
1997	6.949630550699752
1998	6.274820166293233
1999	5.544490503036445
2000	5.162301818103515
2001	6.459960050506722
2002	7.008509808168147
2003	8.782306010616441
2004	9.289625844003082
2005	10.284437380135136
2006	10.857886686053906
2007	12.109959101653976
2008	12.443092751089106
2009	14.88849609750079
2010	16.152804085758802
2011	16.367948559356673
2012	16.293675954595198
2013	17.216057400423423
2014	16.85473445546194
2015	16.901305406070566
2016	17.53213329140407
2017	19.024739582531332
2018	20.06004312411332
2019	20.08668589062464
2020	22.643842789171586