What is the number of Population 2001 Census that has  jharsuguda District Headquarters with an Area smaller than 2,081?
CREATE TABLE "population" (
  "district" text,
  "district_headquarters" text,
  "area_km_2" real,
  "population_1991_census" real,
  "population_2001_census" real
);
SELECT COUNT("population_2001_census") FROM "population" WHERE "district_headquarters"='jharsuguda' AND "area_km_2"<'2,081';