What was the gdp of the country with a gdp per capita of $18048?
CREATE TABLE "1995_enlargement" (
  "member_countries" text,
  "population" real,
  "area_km" real,
  "gdp_billion_us" text,
  "gdp_per_capita_us" real
);
SELECT "gdp_billion_us" FROM "1995_enlargement" WHERE "gdp_per_capita_us"=18048;