What were the investment earnings in a year when other local sources were $2,670,060 after 2001?
CREATE TABLE "district_122_gross_revenue_by_sources" (
  "year" real,
  "property_taxes" text,
  "investment_earnings" text,
  "other_local_sources" text,
  "state_federal" text,
  "total_revenue" text
);
SELECT "investment_earnings" FROM "district_122_gross_revenue_by_sources" WHERE "year">2001 AND "other_local_sources"='$2,670,060';