CREATE TABLE table_31382 ("Value" TEXT, "Dimensions" TEXT, "Main Color" TEXT, "Obverse" TEXT, "Reverse" TEXT, "Watermark" TEXT, "Date of issue" TEXT)

What are the dimensions of the coin issued in 1992 with kim il-sung on the obverse?
SELECT "Dimensions" FROM table_31382 WHERE "Obverse" = 'Kim Il-sung' AND "Date of issue" = '1992'
SELECT "Dimensions" FROM "table_31382" WHERE "Date of issue" = '1992' AND "Obverse" = 'Kim Il-sung'