When we say "international" Input Outpu Table (IIOT), it comprises binational and multinational tables. I am more interested in multinational IOT.
I know that the IDE (now IDE-JETRO) published in 1976 a binational IIOT Japan-Korea 1970. IDE published in 1981 a multinational IIOT ASEAN Countries 1975. It published in 1992 the IIOT Asia 1985. Do these dates show the first publication and compilation years of International IOTs?