What was the Best score during the game played from 1971-1984?
CREATE TABLE "references" (
  "name" text,
  "career" text,
  "matches" real,
  "overs" text,
  "maidens" real,
  "runs" real,
  "wickets" real,
  "average" text,
  "best" text,
  "5w" real,
  "10w" real
);
SELECT "best" FROM "references" WHERE "career"='1971-1984';