CREATE TABLE table_71696 ("Builder" TEXT, "Model" TEXT, "Length  ( ft/m ) " TEXT, "Order Year" TEXT, "Fuel Propulsion" TEXT, "Fleet Series  ( Quantity ) " TEXT)

Which order year has a Fleet Series (Quantity) of 12081-12090 (10)?
SELECT "Order Year" FROM table_71696 WHERE "Fleet Series (Quantity)" = '12081-12090 (10)'
SELECT "Order Year" FROM "table_71696" WHERE "Fleet Series (Quantity)" = '12081-12090 (10)'