Year	% of total merchandise exports
1973	0.30984898622224893
1974	0.26147588611272515
1975	0.06941311213688266
1976	0.189010535013427
1977	0.13631153381455435
1978	0.12931117673170825
1979	0.2586220918569283
1980	0.4166810661900836
1981	0.23009749683693467
1982	0.6575372742593497
1983	1.399535222503555
1984	0.6875826814091361
1985	0.8783816716917893
1986	2.537009839739125
1987	0.6555250473798547
1988	0.9617864783314883
1989	0.65914111327449
1990	0.6077927113516083
1991	0.022625152088489527
1992	1.3393221528726331
1993	0.7667606617142821
1994	0.7304046347529188
1995	0.05601639748512564
1996	0.6954650073134935
1997	1.1167179087723227
1998	0.7387830261963925
1999	0.6003021097152378
2000	0.34636790681123936
2001	0.3426181570363629
2002	0.3426420088226506
2003	0.34258571373058544
2004	0.3425633374355387
2005	0.34253051766614506
2006	0.34257104186718607
2007	0.34258302528921614
2008	0.3425899028800506
2009	0.3425830268643853
2010	0.34257596822109576
2011	0.342603674874476
2012	0.3425336729120419
2013	0.3425336639698189
2014	0.34253368512555604
2015	0.3281310757124406
2016	0.48555468430056553
2017	0.47280313101279814
2018	0.2662718255915122
2019	0.14129689635541884
2020	0.14876208932951726