user: ### NOW ANSWER:
Question: In what year Year has a Co-Drivers of Jérôme Policand Christopher Campbell?
Columns: ['Year', 'Team', 'Co-Drivers', 'Class', 'Laps', 'Pos.', 'Class Pos.']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: [2001.0, 'Warm-Up Luc Alphand Aventures JMB Racing', 'Michel Ligonnet Luis Marques', 'GT', 265.0, '17th', '8th']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Co-Drivers" = 'Jérôme Policand Christopher Campbell';