What is the maximum enrollment of the Sooners?
CREATE TABLE "current" (
  "institution" text,
  "team_name" text,
  "location_population" text,
  "team_started" real,
  "affiliation" text,
  "enrollment" real,
  "mascot" text,
  "divisional_titles" real,
  "big_12_titles" real,
  "national_titles" real
);
SELECT MAX("enrollment") FROM "current" WHERE "team_name"='Sooners';