Year	% of total merchandise exports
1960	0.5229517722254503
1961	0.35070140280561124
1962	0.8335504037509769
1963	1.10881897885508
1964	0.5893909626719057
1965	0.5907516805866775
1966	0.02901073397156948
1967	0.029282576866764276
1969	0.07092600998638221
1970	0.05916076232868029
1971	0.2368608684092859
1972	0.15397030042759222
1973	0.03520450617679063
1974	0.1794677429267993
1975	0.4855780149897797
1976	0.1849037827952073
1977	0.17578225977860626
1978	0.041410404057729534
1979	1.7020513353031692
1980	0.5539373404545056
1981	0.26086882268889866
1982	0.16355116598712646
1983	0.6229384023295759
1984	0.7983202349080232
1985	0.7693658385834791
1986	0.8030660057961594
1987	0.1781214288124171
1988	0.30770885346210647
1989	0.5610972631456395
1990	0.642979075803232
1991	0.6562558541378942
1992	0.6207439005009221
1993	0.6127573473079192
1994	0.7232937932935599
1995	0.6415478578154544
1996	0.736260967109232
1997	0.8307808960931597
1998	1.1843573500666924
1999	1.0229515882605487
2000	1.1891647655793147
2001	1.342028627228301
2002	1.3348274261058715
2003	1.2246538040452037
2004	1.3208767106811177
2005	1.5118432971442057
2006	1.7451819410084175
2007	2.0826061993032443
2008	2.236700030131784
2009	1.919740120868197
2010	2.4510872094165834
2011	2.634250552649265
2012	2.9074355325372214
2013	3.0376391566452945
2014	2.848788625025034
2015	3.0966627657403234
2016	3.169358560455086
2017	2.865985004132669
2018	2.766994175342269
2019	2.753122492154705
2020	2.428152445737516