 Complete the following phrase:  This list includes drivers who have died during a FIA World Championship event including practice, qualifying and the race, and those who have died while driving modern or vintage Formula One cars outside the World Championship. Track marshals and other race attendees who have died as a result of these accidents are not included in the list. Fifty-two drivers have died from incidents that occurred at a FIA World Championship event or while driving a Formula One car at another event, with Cameron Earl being the first in . Thirty-two of the drivers died from incidents during Grand Prix race weekends which formed part of the World Championship, seven during test sessions and twelve during non-championship Formula One events. The Indianapolis Motor Speedway has seen the most fatalities; seven drivers have died there during the time that the Indianapolis 500 formed part of the world championship. Fifteen drivers died in the 1950s; fourteen in the 1960s; twelve in the 1970s; four in the 1980s and two in the 1990s. Following the deaths of Roland Ratzenberger and 