What year did the team who played at the Scottrade Center leave the city?
CREATE TABLE "former_teams" (
  "team" text,
  "sport" text,
  "league" text,
  "established" real,
  "began_in_st_louis" real,
  "venue" text,
  "championships_in_st_louis" text,
  "left_st_louis" real
);
SELECT MIN("left_st_louis") FROM "former_teams" WHERE "venue"='Scottrade Center';