Nico Rosberg won his F1 World Championship, how many years after his father?

Nico Rosberg won the Formula One World Championship 34 years after his father Keke Rosberg won it in 1982.

Nico Erik Rosberg (born 27 June 1985) is a retired German–Finnish Formula One racing driver and 2016 Formula One World Champion. He drove for Williams F1 and Mercedes AMG Petronas under the German flag. Born in Germany to Finnish former world champion Keke Rosberg and his German wife Sina, he holds dual nationality and briefly competed for Finland early in his racing career.

Keijo Erik Rosberg (pronunciation (help·info); born 6 December 1948), known as "Keke", is a Finnish former racing driver and winner of the 1982 Formula One World Championship. He was the first Finnish driver to compete regularly in the series.