Year	% of merchandise imports
1977	39.01508959583145
1978	44.19586954178737
1979	49.51913198646134
1980	37.581603727140845
1981	35.10303757394432
1982	27.17398809582524
1985	29.871304097486806
1997	33.754448424994024
1998	27.833815630330587
1999	31.590230873499298
2001	24.071698092778764
2002	24.87971697288768
2004	29.818445218774052
2005	30.695509201727404
2006	25.224745593629816
2008	21.531196914947458