How many values for population(2011) correspond to a 1.40% in 2006?
CREATE TABLE "mother_tongue_language_2006_and_2011" (
  "mother_tongue" text,
  "population_2006" real,
  "percentage_2006" text,
  "population_2011" real,
  "percentage_2011" text
);
SELECT COUNT("population_2011") FROM "mother_tongue_language_2006_and_2011" WHERE "percentage_2006"='1.40%';