CREATE TABLE table_27518 ("Supply sector  ( % of GDP in current prices ) " TEXT, "1993-2001" TEXT, "2002-2005" TEXT, "2006-2009" TEXT, "2010-2012" TEXT)

The sector that had a 8.7 GDP for 2006-2009 had what GDP for 1993-2001?
SELECT "1993-2001" FROM table_27518 WHERE "2006-2009" = '8.7'
SELECT "1993-2001" FROM "table_27518" WHERE "2006-2009" = '8.7'