What Decile has State Authority and Raumati South Area?
CREATE TABLE "kapiti_coast_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "decile" FROM "kapiti_coast_district" WHERE "authority"='state' AND "area"='raumati south';