CREATE TABLE table_21881 ("Season" CLOB, "Date" CLOB, "Driver" CLOB, "Team" CLOB, "Chassis" CLOB, "Engine" CLOB, "Laps" CLOB, "Miles  ( km ) " CLOB, "Race Time" CLOB, "Average Speed  ( mph ) " CLOB, "Report" CLOB)

When 2005 is the season how many drivers are there?
SELECT COUNT("Driver") FROM table_21881 WHERE "Season" = '2005'
SELECT COUNT("Driver") FROM "table_21881" WHERE "Season" = '2005'