The sector that had a 8.7 GDP for 2006-2009 had what GDP for 1993-2001?
CREATE TABLE "gdp_by_value_added" (
  "supply_sector_pct_of_gdp_in_current_prices" text,
  "1993_2001" text,
  "2002_2005" text,
  "2006_2009" text,
  "2010_2012" text
);
SELECT "1993_2001" FROM "gdp_by_value_added" WHERE "2006_2009"='8.7';