CREATE TABLE table_18524_6 (tourism_receipts__2003___as__percentage_of_gdp_ VARCHAR2, country VARCHAR2)

Name the tourism receipts 2003 for colombia
SELECT tourism_receipts__2003___as__percentage_of_gdp_ FROM table_18524_6 WHERE country = "Colombia"
SELECT "tourism_receipts__2003___as__percentage_of_gdp_" FROM "table_18524_6" WHERE "Colombia" = "country"