Year	% of total merchandise exports
1960	0.057452962438894674
1961	0.05302601591988977
1962	0.2128891665964173
1963	0.227508128744542
1964	0.2614056868129448
1965	0.2472547610217092
1966	0.3528159953994965
1967	0.4340192210850317
1968	0.4974940369610511
1969	0.37706503651029155
1970	0.41089956605915023
1971	0.4232167729516114
1972	0.25756514125581476
1973	0.2894976874607191
1974	0.26483574438436347
1975	0.5257464803806698
1976	0.7277032132498454
1977	0.6432928144875435
1978	0.5844232973430498
1979	0.4718629476877234
1980	0.6947963820100286
1981	1.732864163611197
1982	1.595083244833902
1983	1.3584533553840978
1984	1.3079260854503747
1985	1.4600046743645516
1986	1.09004392267055
1987	1.2169610526006265
1988	1.1717219155219403
1989	1.171845745324098
1990	1.0080188747944945
1991	0.4485776759899626
1992	2.771965186783451
1993	2.9633071348211355
1994	5.399512547249438
1995	5.58253565722993
1996	5.580636847737131
1997	5.681958640855825
1998	5.042148613089715
1999	3.7765444814449443
2000	4.014632415768121
2001	3.6584230369582595
2002	4.267515555762022
2003	4.962897786681501
2004	4.704219460159381
2005	5.418029076094866
2006	5.680867291569613
2007	7.0024982462060255
2008	7.625934238465201
2009	5.191557637384271
2010	5.146323177815182
2011	5.78686814816962
2012	6.601269533719867
2013	6.4996057930361895
2014	6.198735381498191
2015	5.107586286137956
2016	5.120336100009632
2017	5.571961288644009
2018	5.489111332132206
2019	5.780139533612055
2020	5.808668602812069