ปีใดที่มีเครื่องยนต์ของยามาฮ่า v8?ไม่จำเป็นต้องใช้ทุกโต๊ะ
Which year has an Engine(s) of yamaha v8?It is not neccessary to use all the tables.
 table_67623:  "Year" [ real]  "Chassis" [ text]  "Engine(s)" [ text]  "Tyres" [ text]  "Points" [ real] 
SELECT "Year" FROM table_67623 WHERE "Engine(s)" = 'yamaha v8'