Year	% of merchandise exports
1974	2.9644952438133054
1975	1.647613932395164
1976	1.1972878057354088
1977	1.4967341506935243
1978	2.2383571706175687
1979	2.006219812455485
1980	1.1742491957193455
1981	1.6991966170440302
1982	1.0730982553244899
1983	1.4654862898211916
1984	1.4458064331448075
1985	1.219011650546232
1986	2.944783573944134
1987	4.235363736309985
2000	0.7563311053187505
2001	0.0438075381503897
2002	0.827703116152759
2003	0.8690466437278209
2004	1.0628601019143862
2005	1.259548816913087
2006	1.1532288123785384
2007	1.169467287264482
2008	4.091316676950629
2009	2.2067615425282945
2010	2.6634298776370033