What is the lowest 1971 number of the Macedonian population with a 2002 value greater than 133 and a 1991 value less than 171?
CREATE TABLE "distribution" (
  "macedonian_population_in_vojvodina" text,
  "1961" real,
  "number_1971" real,
  "1981" real,
  "1991" real,
  "2002" real
);
SELECT MIN("number_1971") FROM "distribution" WHERE "2002">133 AND "1991"<171;