Year	% of merchandise exports
1976	90.03554251237561
1977	92.77292885602458
1978	92.36679492006272
1979	86.94251765079866
1980	88.22146847118279
1981	89.17621621776861
1982	94.79053360149314
1983	96.72009884848349
1984	93.53941210847123
1985	91.97609978000068
1986	91.38722875521285
1987	78.44380814868089
1988	85.31511201431448
1989	90.92452623692945
1990	92.250982292348
1991	93.69088306698244
1992	89.70750748765933
1993	95.10197223830353
1994	95.91205307964005
1996	91.14363895553242
1997	91.28282551918888
1998	91.18008026735737
1999	93.42066056585713
2000	89.85089461287772
2001	95.64310451775523
2002	96.13242126082581
2003	92.67973747454553
2004	91.68039016423339
2005	91.63265282925359
2006	91.77585908668023
2007	90.40888073289719
2008	79.1594680576575
2009	88.04692182697126