What is the average 2006 value with a 2010 value of 417.9 and a 2011 value greater than 426.7?
CREATE TABLE "economic_profile" (
  "geographic_unit" text,
  "2006" real,
  "2007" real,
  "2008" real,
  "2009" real,
  "2010" real,
  "2011" real
);
SELECT AVG("2006") FROM "economic_profile" WHERE "2010"=417.9 AND "2011">426.7;