Proportional Circle Map

This map was taken from http://personal.frostburg.edu/mtmaier0/maps.htm

This is a good example of a proportional circle map.  This is an example of where the highest traffic fatalities occur in the United States by varying the size of the circle on the map based on how large the number the number is accompanying the state.  The problem I see with this map is that the highest traffic fatalities go with the states with the highest population.