What is the lowest Total Region that has a Year after 2001, and a Broadsound greater than 6,843?
CREATE TABLE "population" (
  "year" real,
  "total_region" real,
  "belyando" real,
  "broadsound" real,
  "nebo" real
);
SELECT MIN("total_region") FROM "population" WHERE "year">2001 AND "broadsound">'6,843';