What is the 1981 value of the Macedonian population with a 1971 number greater than 192 and a 1991 of 1748?
CREATE TABLE "distribution" (
  "macedonian_population_in_vojvodina" text,
  "1961" real,
  "number_1971" real,
  "1981" real,
  "1991" real,
  "2002" real
);
SELECT "1981" FROM "distribution" WHERE "number_1971">192 AND "1991"=1748;