Year	% of merchandise exports
1963	55.11373906946995
1972	43.768360280601584
1973	45.63459847510999
1974	53.898524087171666
1975	57.87468420342531
1976	60.21955525185009
2000	67.93638098954992
2001	66.49585566113457
2002	64.56569946135136
2006	72.69788975022108
2007	67.36135742510307
2008	70.1299831532645
2009	70.30445832190661
2010	67.7913262153088
2011	60.31210924758793
2012	63.22751111932539
2013	67.28311703874814
2014	61.779104858619306
2015	57.065378427754545
2016	58.178078141603756