CREATE TABLE table_18888 ("Region/country" CLOB, "1985-1990" CLOB, "1990-1995" CLOB, "1995-2000" CLOB, "2000-2005" CLOB)

what's the 1985-1990 with 2000-2005 being 2.52
SELECT "1985-1990" FROM table_18888 WHERE "2000-2005" = '2.52'
SELECT "1985-1990" FROM "table_18888" WHERE "2000-2005" = '2.52'