You didn't read the article, did you?
According to a recent report by the National Highway Traffic Safety Administration, there were 4,553 fatalities in motorcycle accidents in 2005. Those deaths include only the operators and passengers on the bikes. Agency officials could not say how many pedestrians or people in other vehicles died in these crashes, though statisticians are trying to get the data at The Times' request.
That's because it is very rare! The vast majority of motorcycle deaths are due to car drivers not seeing the bike or the rider's inexperience/lack of training.