What is the average year Rich Beem had a to par less than 17?
CREATE TABLE "missed_the_cut" (
  "player" text,
  "country" text,
  "year_won" real,
  "total" real,
  "to_par" real
);
SELECT AVG("year_won") FROM "missed_the_cut" WHERE "player"='rich beem' AND "to_par"<17;