CREATE TABLE table_70218 ("Currency" TEXT, "Code" TEXT, "Entry ERM II" TEXT, "Central rate" TEXT, "Official target date" TEXT)

What is the official target date for the Swedish Krona?
SELECT "Official target date" FROM table_70218 WHERE "Currency" = 'swedish krona'
SELECT "Official target date" FROM "table_70218" WHERE "Currency" = 'swedish krona'