CREATE TABLE table_30109 ("Player" TEXT, "Matches" FLOAT, "Overs" TEXT, "Wickets" FLOAT, "Average" TEXT, "Economy" TEXT, "BBI" TEXT, "4wi" FLOAT)

How many 4wi were recorded by the player with an economy of 4.17?
SELECT "4wi" FROM table_30109 WHERE "Economy" = '4.17'
SELECT "4wi" FROM "table_30109" WHERE "Economy" = '4.17'