Once a year between 2008–2012 the European Formula One Grand Prix took place in the Valencia Street Circuit. Valencia is among with Barcelona, Porto and Monte Carlo the only European cities ever to host Formula One World Championship Grands Prix on public roads in the middle of cities. The final race in 2012 European Grand Prix saw an extremely popular winner, since home driver Fernando Alonso won for Ferrari in spite of starting halfway down the field. The Valencian Community motorcycle Grand Prix (Gran Premi de la Comunitat Valenciana de motociclisme) is part of the Grand Prix motorcycle racing season at the Circuit Ricardo Tormo (also known as Circuit de Valencia). Periodically the Spanish round of the Deutsche Tourenwagen Masters touring car racing Championship (DTM) is held in Valencia.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In which years was the European Formula One Grand Prix in Valencia?
2008–2012