Year	% of total merchandise exports
1960	2.0387483787289233
1961	2.0635663532315025
1962	1.8239380050087417
1963	1.3034547152194211
1964	1.7142455680194841
1965	1.4297729184188395
1966	1.177536231884058
1967	1.416352124236606
1968	1.9801571424701438
1969	1.721179605537739
1970	1.9715367246931643
1971	1.8968921296805707
1972	1.3718635830604375
1973	0.917854955218194
1974	1.055863177654697
1975	1.01718882165378
1976	0.8397496226524949
1977	0.5576216238861162
1978	0.5256108764920646
1979	0.7991471084783047
1980	0.8788151293806031
1981	0.974310013747853
1982	1.1320484681746956
1983	0.965006962076893
1984	0.8620663455020449
1985	0.963524308882689
1986	1.022741092993928
1987	0.9434334068479322
1988	1.0736170246798344
1989	0.9435418876678477
1990	1.1773711526738355
1991	1.2003402231045877
1992	1.3382614089439722
1993	1.3638732529617144
1994	1.2214525990106018
1995	1.3095637058246727
1996	1.7391312862970347
1997	1.942968326498094
1998	2.4971917461404645
1999	1.7609301721322652
2000	2.453176116673229
2001	2.463273472377466
2002	2.407850804729086
2003	2.479579790917513
2004	2.580815799873785
2005	2.664930329889966
2006	2.6684134054904565
2007	2.678205217476244
2008	2.498627135555402
2009	2.730530763682408
2010	2.5024015820140137
2011	2.998162601736742
2012	2.7685481424589686
2013	2.8071099403584276
2014	3.1948042462630237
2015	3.55805947055787
2016	3.5824582787456523
2017	3.5624687550191076
2018	3.285747056654398
2019	3.3941751099303046
2020	3.6813297280940467