CREATE TABLE table_35069 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Venue" TEXT, "Attendance" FLOAT)

Attendance of 60,671 had what average week?
SELECT AVG("Week") FROM table_35069 WHERE "Attendance" = '60,671'
SELECT AVG("Week") FROM "table_35069" WHERE "Attendance" = '60,671'