CREATE TABLE table_40712 ("Year" FLOAT, "Team" TEXT, "Co-Drivers" TEXT, "Class" TEXT, "Laps" FLOAT, "Pos." TEXT, "Class Pos." TEXT)

In what year Year has a Co-Drivers of j r me policand christopher campbell?
SELECT SUM("Year") FROM table_40712 WHERE "Co-Drivers" = 'jérôme policand christopher campbell'
SELECT SUM("Year") FROM "table_40712" WHERE "Co-Drivers" = 'jérôme policand christopher campbell'