CREATE TABLE table_49130 ("Team" CLOB, "City" CLOB, "State/Province" CLOB, "League" CLOB, "Est." CLOB)

In what year was the NFL team in chicago illinois established?
SELECT "Est." FROM table_49130 WHERE "State/Province" = 'illinois' AND "City" = 'chicago' AND "League" = 'nfl'
SELECT "Est." FROM "table_49130" WHERE "City" = 'chicago' AND "League" = 'nfl' AND "State/Province" = 'illinois'