Year	% of merchandise exports
1992	9.77940364846476
1996	14.839614196365037
1997	14.255369642357717
1998	10.434768251054596
1999	12.606140953219807
2000	15.591610445604747
2001	14.153058979391247
2002	12.147882359447006
2004	10.896852463287214
2005	9.202197143133514
2006	11.294482916207617
2007	10.29455975286889