CREATE TABLE table_63767 ("Coaster Name" TEXT, "Park" TEXT, "Location" TEXT, "Track" TEXT, "Builder" TEXT, "Year Opened" TEXT)

Which year opened has le monstre coaster?
SELECT "Year Opened" FROM table_63767 WHERE "Coaster Name" = 'le monstre'
SELECT "Year Opened" FROM "table_63767" WHERE "Coaster Name" = 'le monstre'