CREATE TABLE table_30779 ("Player" TEXT, "Matches" FLOAT, "Overs" TEXT, "Wickets" FLOAT, "Average" TEXT, "Economy" TEXT, "BBI" TEXT, "4wi" FLOAT)

How many economy stats for the player with 2/19 BBI?
SELECT COUNT("Economy") FROM table_30779 WHERE "BBI" = '2/19'
SELECT COUNT("Economy") FROM "table_30779" WHERE "BBI" = '2/19'