How many wickets was there when the economy was 3.64?
CREATE TABLE "bowling_averages" (
  "player" text,
  "county" text,
  "balls" real,
  "wickets" real,
  "average" text,
  "economy" text,
  "bbi" text,
  "4wi" real,
  "5wi" real
);
SELECT "wickets" FROM "bowling_averages" WHERE "economy"='3.64';