According to wikipedia, "There are three main ways in which risk of fatality of a certain mode of travel can be measured: Deaths per billion typical journeys taken, deaths per billion hours traveled, or deaths per billion kilometers traveled." This chart visualizes these statistics for the United Kingdom from 1990–2000.
The graph is laid out using a log scale which results in downplaying the high casuality rate for motorcycle drivers, however it was choosen because without it, the rest of the data would not be comparable.
The data source can be found on wikipedia. The original source also includes Paragliding, Skydiving, and Space Shuttle, which were too rarely used to be included in this analysis.
deaths per billion