Statistics of foreign trade.

exports 1968 Jan-Jun; exports 1968 Jan-Dec; imports 1968 Jan-Jun; imports 1968 Jan-Dec; 1968; 1968 Exports v.1; 1968,v.2; 1969 no.2 pt.1; 1969,v.1; 1969:General/Imports:v.1-2; 1969,v.2; 1969,v.3; 1970:Imports; 1970:Exports; 1970 v.1 imports; 1970,v.1,pt.1; 1970,v.1,pt.2; 1970 v.2 imports; 1970 v.2-3 exports; 1970,v.2,pt.1; 1970,v.2,pt.2; 1970,v.3,pt.1; 1971:Imports; 1971:Exports; 1971 v.1-2 exports; 1971 v.1 imports; 1971,v.1-2,pt.1; 1971,v.1,pt.2; 1971 v.2 imports; 1971,v.3,pt.1; 1972:Imports; 1972:Exports; 1972 v.1-2 imports; 1972,v.1,pt.1; 1972,v.1,pt.2; 1972,v.2,pt.2; 1972,v.3,pt.1; 1973 v.1 exports; 1973 v.1 imports; 1973:Imports:v.1-2; 1973,v.1,pt.1; 1973,v.1,pt.2; 1973 v.2-3 exports; 1973 v.2 imports; 1973,v.2,pt.1; 1973,v.2,pt.2; 1973:Exports:v.3; 1974 v.1 exports; 1974 v.1 imports; 1974:Exports:v.1-2; 1974:Imports:v.1-2; 1974,v.1,pt.1; 1974,v.1,pt.2; 1974 v.2 exports; 1974 v.2 imports; 1974,v.2,pt.1; 1974,v.2,pt.2; 1974 v.3 exports; 1974,v.3,pt.1; 1975:Exports:v.1-2; 1975:Imports:v.1-2; 1975,v.1,pt.1; 1975,v.1,pt.2; 1975:Exports:v.3; 1975,v.3,pt.1; 1976 exports; 1976 imports; 1977 exports; 1977 imports; 1978 exports; 1978 imports; 1979 exports; 1979 imports; 1980 Exports; 1980 imports; 1981; 1983-1985; 1988; 1989 v.1-2; 1989 v.3-4; 1989 v.5; 1990 v.1-2; 1990 v.3; 1990 v.4-5; 1991 v.1; 1991 v.2; 1991 v.3; 1991 v.4; 1991 v.5; 1992 v.1; 1992 v.2; 1992 v.3; 1992 v.4; 1992 v.5; 1993 v.1; 1993 v.2; 1993 v.3; 1993 v.4; 1994 v.1; 1994 v.2; 1994 v.3; 1994 v.4; 1994 v.5; 1995 v.1; 1995 v.2; 1995 v.3; 1995 v.4; 1995 v.5; 1991-1996 v.1; 1991-1996 v.2; 1994-1999 v.1; 1994-1999 v.2; 1994-1999 v.3; 1994-1999 v.4; 1994-1999 v.5; 1992 v.1 suppl