Name the total number of index weighting % at 17 january 2013 for bouygues
CREATE TABLE "composition" (
  "company" text,
  "icb_sector" text,
  "ticker_symbol" text,
  "index_weighting_pct_at_17_january_2013" text,
  "market_cap_at_april_2013" text
);
SELECT COUNT("index_weighting_pct_at_17_january_2013") FROM "composition" WHERE "company"='Bouygues';