What is the lowest Rank for the Name, "area of permanent crops", Out of a number smaller than 181?
CREATE TABLE "rankings" (
  "name" text,
  "rank" real,
  "out_of" real,
  "source" text,
  "year" text
);
SELECT MIN("rank") FROM "rankings" WHERE "name"='area of permanent crops' AND "out_of"<181;