What is the average number of years for the Houston Rockets 2004-05?
CREATE TABLE "g" (
  "player" text,
  "no_s" real,
  "height_in_ft" text,
  "position" text,
  "years_for_rockets" text,
  "school_club_team_country" text
);
SELECT AVG("no_s") FROM "g" WHERE "years_for_rockets"='2004-05';