Year	% of total merchandise exports
1971	0.00447127207690588
1972	0.09676481116878467
1973	0.0003858783942828257
1974	0.07399125258969384
1975	0.063569546011359
1976	0.05933827104006406
1977	0.12333273858154828
1978	0.05295802675182745
1979	0.025981327518059153
1980	0.012566877038652386
1981	0.024035166118605532
1982	0.02987042598055418
1983	0.04467607079495714
1984	0.09882174078297225
1985	0.06505613489816885
1986	0.09580318086765018
1987	0.22304390632432491
1988	0.1507988492678959
1989	0.21533675005589295
1990	0.2964401983248919
1991	0.2429295132920672
1992	0.5866671447510339
1993	1.3044603832923667
1994	1.232577624083558
1995	1.5815354439754716
1996	1.5646912710199474
1997	2.1324231759312307
1998	1.249404339957019
1999	0.41306958336540306
2000	0.34014726699169884
2001	0.23276075072269478
2002	0.4042810299148097
2003	0.554334653115615
2004	0.5727060502674545
2005	0.7920573985929155
2006	0.8558156135014006
2007	0.8727635244687985
2008	1.060832531719271
2009	0.8619126753819132
2010	1.1614122570486904
2011	1.1325838729288444
2012	1.0468604686265979
2013	1.109590707566093
2014	1.0870776642008093
2015	0.7374083132638672
2016	0.8848950947167424
2017	0.8152330074034903
2018	0.5576262274072941
2019	0.9020204624668605
2020	0.833552570584486