What was the team performance in 1977?
CREATE TABLE "nfl_defensive_players_of_the_year" (
  "year" real,
  "nfl_team" text,
  "position" text,
  "team_defense_rank" real,
  "team_performance" text
);
SELECT "team_performance" FROM "nfl_defensive_players_of_the_year" WHERE "year"=1977;