What is the lowest population(2006) when there is a 1.06% in 2011?
CREATE TABLE "mother_tongue_language_2006_and_2011" (
  "mother_tongue" text,
  "population_2006" real,
  "percentage_2006" text,
  "population_2011" real,
  "percentage_2011" text
);
SELECT MIN("population_2006") FROM "mother_tongue_language_2006_and_2011" WHERE "percentage_2011"='1.06%';