Year	% of total merchandise exports
1972	0.3312172232956114
1973	0.2441727843729418
1979	0.10033268205101124
1980	0.8079625072257192
1981	0.14659246737389803
1982	0.14659246736739007
1983	0.1465924673735734
1984	0.14659246738783907
1985	0.1465924673593098
1986	0.9108614827986736
1987	0.8484169539111526
1988	2.091495128770357
1989	0.6887623808577582
1990	0.8493713853327074
1991	2.6665745390195457
1992	1.58302312575004
1993	1.1472455364945873
1994	0.3575087232722843
1995	0.30349701358755676
1996	0.3668679884553004
1997	0.44320580984373964
1998	0.5498907335863308
1999	0.45937318451558967
2000	0.5920971663347924
2001	0.5325391387933308
2002	3.0780593457118464
2003	0.6940585000216266
2004	1.1786485362194414
2005	0.8665920967267976
2006	0.657071003484991
2007	0.5214385603150928
2008	0.41456891210874985
2009	0.5721854342721715
2010	1.2569285304513265
2011	0.779213611222936
2012	0.6566309572548484
2013	0.5225442352976694
2014	0.5910159827692697
2015	1.8165631686632784
2016	2.7238294452389953
2017	2.3658471168659245
2018	1.134837973341099
2019	0.7352061952758351
2020	0.6373816592481898