Name the total number of tier 1 capital for allied irish banks
CREATE TABLE "table1_22368322_2" (
  "institution" text,
  "date_of_report" text,
  "s_risk_weighted_asset_million" real,
  "tier_1_capital_million" real,
  "tier_1_ratio" text
);
SELECT COUNT("tier_1_capital_million") FROM "table1_22368322_2" WHERE "institution"='Allied Irish Banks';