When  ime exchange (including spot, credit and forward transactions) is oil products - value (billion rials) what is the 2008/09 number?
CREATE TABLE "table1_28578233_1" (
  "ime_exchange_including_spot_credit_and_forward_transactions" text,
  "2007_08" text,
  "2008_09" text,
  "2009_10" text,
  "2010_11" text
);
SELECT COUNT("2008_09") FROM "table1_28578233_1" WHERE "ime_exchange_including_spot_credit_and_forward_transactions"='Oil Products - Value (billion rials)';