In 2006, what is the highest number for Live births in the County of Cumbria that has a TFR larger than 1.76?
CREATE TABLE "references" (
  "county" text,
  "live_births_2006" real,
  "gfr_2006" real,
  "tfr_2006" real,
  "whites_as_pct_of_pop" text
);
SELECT MAX("live_births_2006") FROM "references" WHERE "county"='cumbria' AND "tfr_2006">1.76;