Year % of merchandise exports 1962 3.7450272203067763 1963 7.210281332867123 1964 3.9943275775018194 1965 2.9344696500286145 1966 5.206305746005668 1967 4.75397677631168 1968 9.526082216628923 1969 16.896104972908102 1970 18.77942983466085 1971 22.834811458226937 1972 17.078598678208632 1973 21.87543538111953 1974 13.561455340457771 1975 14.953702707296342 1977 11.439639731436966 1978 14.081747707055783 1979 7.564878512105433 1980 15.078827589031008 1981 19.65744420116295 1986 25.556640975119567 1987 25.167971255920257 1996 48.44102545951245 1997 46.21272483198786 1998 52.831279837971145 1999 56.83338701096575 2000 27.05133513512625 2001 29.100229012208057 2002 51.471536736344895 2003 35.8937459360835 2004 38.87004801949973 2005 44.889066154818195 2006 43.221775681958825 2007 36.11705429464772 2008 38.80909437274741 2009 38.220848767278326 2010 37.65340255015489 2011 39.82991274002291 2012 39.17331485141467 2013 29.495663114757114 2014 28.93315437585644 2015 28.731111133732632 2016 32.07907567828768 2017 29.093602191463287 2018 27.6635402547323 2019 24.105284145761495 2020 25.840879235793786 2021 26.936830828077046 2022 28.3600906720229