Year	% of merchandise exports
1981	71.53913614701129
1982	74.45880873967043
1983	71.12502170424109
1986	52.82465944403679
1987	42.042348214003226
1993	60.93571618085875
1994	68.34039388566654
1995	58.277595535295866
1996	71.51044843652824
1997	65.96597644311974
1999	29.47660542217523
2000	26.96370489723414
2001	26.788312379738194
2002	30.190168556390173
2003	22.523922415947876
2004	28.999551867473073
2005	4.474127857099642
2006	7.623818060348804
2007	10.125417341095558
2008	10.010590726929019
2009	10.723915346697764
2010	12.603211376884843
2011	12.602580598463692
2012	11.485564704818314
2013	11.715148852342267
2014	14.048797364311882
2015	17.951809389924943
2016	14.36921851818687
2017	13.482284459471236