Year	% of total merchandise exports
1960	0.4339772426567875
1961	0.12148700089090467
1962	0.328313443155547
1963	0.2457256031334929
1964	0.16769916318117573
1965	0.18140084482170193
1966	0.058695090742610284
1967	0.38008546655288417
1968	0.5586433440258651
1969	0.7146854368068645
1970	0.4393584538909221
1971	0.39267244340777263
1972	0.2711380886715205
1973	0.2742259920316611
1974	0.22956879932445992
1975	0.2023017495562782
1976	0.21676915795948165
1977	0.20136307561239622
1978	0.3267283725241054
1979	0.7647597691192018
1980	1.0580482437072651
1981	1.0564498082051035
1982	0.8964598711368762
1983	0.9524267830803796
1984	0.9898204498902701
1985	0.9599868691586697
1986	0.7512405070610311
1987	0.5919735794464299
1988	0.44905858977901836
1989	0.5330811472986628
1990	0.6167167495810664
1991	0.6099200922699363
1992	0.6650817039026939
1993	0.9283015437981391
1994	1.0263916250260503
1995	1.0599956439512477
1996	1.0011398175012483
1997	1.1743500504964846
1998	1.4295694690956864
1999	1.295031668231777
2000	1.4366058974617548
2001	1.5724638169997558
2002	1.5901377107228751
2003	1.4969748707644706
2004	1.7477754082523258
2005	1.7826473061824784
2006	2.197928439525267
2007	2.52739936467624
2008	2.977610707816475
2009	2.77284433069548
2010	3.391680467816823
2011	3.6879204536679056
2012	3.777558363679301
2013	3.800743917106961
2014	3.727766039300673
2015	3.7833469935875894
2016	3.666156185995733
2017	3.8941521549540346
2018	3.9958222326238504
2019	4.101350668133964
2020	3.9070450926618117