What number of win% has a postseason of did not qualify and rank larger than 8?
CREATE TABLE "season_by_season_records" (
  "year" real,
  "rank" real,
  "games" real,
  "winpct" real,
  "postseason" text
);
SELECT COUNT("winpct") FROM "season_by_season_records" WHERE "postseason"='did not qualify' AND "rank">8;