Name the maximum wins for 68.75%
CREATE TABLE "performance_summary_in_indian_premier_le" (
  "year" real,
  "matches" real,
  "wins" real,
  "losses" real,
  "no_result" real,
  "tied" real,
  "success_rate" text,
  "position" text,
  "summary" text
);
SELECT MAX("wins") FROM "performance_summary_in_indian_premier_le" WHERE "success_rate"='68.75%';