Year	% of merchandise imports
1977	47.28029962200063
1978	39.35852008395583
1979	37.45515355239946
1980	45.74079099934424
1981	44.04443595085526
1982	50.36311508559421
1985	51.99241104903095
1997	50.99410142928619
1998	56.614744024369514
1999	53.856066297670544
2001	31.16090129502536
2002	25.994471000718754
2004	28.87665744648456
2005	21.811968202131304
2006	21.19231207149935
2008	15.490767202540528