Given the paragraph about the Colnago C40, in which year was a Colnago-branded bicycle first ridden by the overall classification winner in the Tour de France?

The C40 went on to win 5 editions of Paris-Roubaix in 6 years.[14] Surpringly, the victory of Tadej Pogačar in the 2020 edition of the Tour de France marked the first time a Colnago-branded bicycle was ridden by the overall classification winner, since Merckx's victories were aboard re-branded bikes.[15]

2020 was the first year a Colnago-branded bicycle was first ridden by the overall classification winner in the Tour de France.