CREATE TABLE table_18061 ("Country" TEXT, "Population" FLOAT, "Native American" TEXT, "Whites" TEXT, "s Mestizo" TEXT, "es Mulatto" TEXT, "Blacks" TEXT, "s Zambo" TEXT, "Asians" TEXT)

what's the country with es mulatto being 3.5%
SELECT "Country" FROM table_18061 WHERE "es Mulatto" = '3.5%'
SELECT "Country" FROM "table_18061" WHERE "es Mulatto" = '3.5%'