CREATE TABLE table_33491 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the sum of the crowd sizes when the home team scored 9.17 (71)?
SELECT SUM("Crowd") FROM table_33491 WHERE "Home team score" = '9.17 (71)'
SELECT SUM("Crowd") FROM "table_33491" WHERE "Home team score" = '9.17 (71)'