What is the 2000 number when the 1989 is less than 54.9 in Arizona, New Mexico, and Utah?
CREATE TABLE "changes_in_poverty_rates_on_largest_rese" (
  "reservation" text,
  "location" text,
  "1969" real,
  "1979" real,
  "1989" real,
  "2000" real
);
SELECT SUM("2000") FROM "changes_in_poverty_rates_on_largest_rese" WHERE "1989"<54.9 AND "location"='arizona, new mexico, and utah';