CREATE TABLE table_26204 ("Country" TEXT, "% of all immigrants 2008" TEXT, "% of all immigrants 2007" TEXT, "% of all immigrants 2006" TEXT, "% of all immigrants 2005" TEXT, "% of all immigrants 2004" TEXT)

What's the percentage of immigrants in 2004 in the country with 2.1% of the immigrants in 2006?
SELECT "% of all immigrants 2004" FROM table_26204 WHERE "% of all immigrants 2006" = '2.1%'
SELECT "% of all immigrants 2004" FROM "table_26204" WHERE "% of all immigrants 2006" = '2.1%'