Year % of total merchandise exports 1960 86.60099851571988 1961 87.89833822091887 1962 88.78081198646689 1963 89.44681299015738 1964 89.24125526577367 1965 88.83801295896329 1966 89.8661333768672 1967 88.36363636363636 1968 88.37120924222847 1969 88.19152077340846 1970 88.03213714394862 1971 88.9159343122207 1972 88.44768865280895 1973 89.13445952324946 1974 87.98753527416304 1975 87.66570591955666 1976 88.50331974846965 1977 86.97872619529127 1978 87.56580098819285 1979 88.79792057738145 1980 88.34309308380423 1981 87.15825795020051 1982 87.43187679036564 1983 88.40123731434988 1984 88.07861737101582 1985 89.60309025267374 1986 90.25128084170882 1987 90.70183838545708 1988 90.32944734945106 1989 90.54831223770317 1990 89.42650227581468 1991 91.51238767855212 1992 90.55340881088158 1993 90.88898853803484 1994 89.8832039644534 1995 89.14945014004296 1996 90.17120130731811 1997 89.89193214635944 1998 90.55954535690111 1999 93.63693910957596 2000 93.44316356227812 2001 92.78946969636905 2002 93.0299277486184 2003 92.50590709975418 2004 92.05379034901743 2005 91.71225678469793 2006 92.47571010361605 2007 90.88553341045275 2008 89.92457663612845 2009 90.10706985991473 2010 89.30125229861 2011 88.7345139758993 2012 87.62716487402649 2013 86.91750365843765 2014 87.41456999363189 2015 86.89254009897236 2016 86.36545836407757 2017 85.91484103467114 2018 86.14978930827355 2019 85.47673660079978 2020 84.89933750761955