Year	% of merchandise imports
1977	5.332423897429518
1978	10.992092195862876
1979	7.89094426881617
1980	12.944718521706555
1981	16.235324068678505
1982	16.765641363861008
1985	12.464952313000282
1997	10.76875910284714
1998	11.407685228425105
1999	9.208092204036115
2001	1.5296064206770967
2002	11.060544092751952
2004	14.362587987469658
2005	20.959967744213223
2006	19.44438389975751
2008	16.757034305782483