CREATE TABLE table_2929 ("Year" FLOAT, "Population" FLOAT, "Serbs" TEXT, "Germans" TEXT, "Romanians" TEXT, "Hungarians" TEXT, "Croats" TEXT, "Roma" TEXT, "Slovaks" TEXT, "Rest" TEXT)

What is every value for Croats if the value of Roma is 3.1%?
SELECT "Croats" FROM table_2929 WHERE "Roma" = '3.1%'
SELECT "Croats" FROM "table_2929" WHERE "Roma" = '3.1%'