Year	% of total merchandise exports
1960	0.47102408044456207
1961	0.8504090062363326
1962	0.29824082648497835
1963	0.2412578648947021
1964	0.4127979401382787
1965	0.7593523736722407
1966	0.6573850163172352
1967	0.717488983059318
1968	0.31483941413991756
1969	0.30054065062846286
1970	0.5253412679812047
1971	0.49132576635368547
1972	0.44116519095870593
1973	0.3186896551789956
1974	0.6415246855424478
1975	0.3887231569972172
1976	0.5808303685218087
1977	0.9149133381977297
1978	1.0766027953720474
1979	0.653842491673094
1980	0.6577293010986421
1981	1.2513611969705887
1982	1.4409741425808313
1983	1.044334077537465
1984	1.0830966570681284
1985	0.8050017755844607
1986	1.0361955382020782
1987	1.4833450953205496
1988	1.8253251588735628
1989	0.7834323351034915
1990	0.9874353313777621
1991	0.8032545011044806
1992	0.8050763382392275
1993	0.8583199530969902
1994	0.7588742446537746
1995	0.884502180876631
1996	0.8713585925718809
1997	0.9202185470132314
1998	1.1337743169531689
1999	1.124003875851803
2000	1.0910449592631202
2001	1.306349206965177
2002	1.2474374426490238
2003	1.3864118445765952
2004	1.435363463805786
2005	1.525735418999409
2006	1.6628936562113006
2007	1.885831006238709
2008	2.2303302157642193
2009	2.4363726917109743
2010	2.409443166252313
2011	2.6268780820150517
2012	2.7216702653185036
2013	2.7811968592206573
2014	3.008997612702476
2015	3.0681994280614537
2016	2.7302268058260197
2017	2.6172430677210845
2018	2.568049668136929
2019	2.752693956177439
2020	2.687978138537837