On-road motorcycling 8.8
Living (all causes of death) 1.5
Passenger cars 0.5
Flying (scheduled domestic airlines) 0.2
The reason Grist uses these numbers is that, while outdated, they're apparently the only ones that can be found in a peer-reviewed journal. I'm sure bike clubs around the world would like to have more recent statistics, but for now we'll settle for authenticity over currency. I highly recommend the Grist article, as it gets into all sorts of reasons why biking is so good for us and the planet, and it points out that the U.S. still has a long way to go to make biking safer.
[Source: Grist, Treehugger]