CREATE TABLE table_61781 ("Year" FLOAT, "Award ceremony" TEXT, "Role" TEXT, "Production" TEXT, "Result" TEXT)

Which Year saw the Production of Wicked at the Helpmann Awards Award ceremony?
SELECT "Year" FROM table_61781 WHERE "Production" = 'wicked' AND "Award ceremony" = 'helpmann awards'
SELECT "Year" FROM "table_61781" WHERE "Award ceremony" = 'helpmann awards' AND "Production" = 'wicked'