ในปีใดที่มีผู้ร่วมขับของ jr me policand christopher campbell?ไม่จำเป็นต้องใช้ตารางทั้งหมด
In what year Year has a Co-Drivers of j r me policand christopher campbell?It is not neccessary to use all the tables.
 table_40712:  "Year" [ real]  "Team" [ text]  "Co-Drivers" [ text]  "Class" [ text]  "Laps" [ real]  "Pos." [ text] 
SELECT SUM("Year") FROM table_40712 WHERE "Co-Drivers" = 'jérôme policand christopher campbell'