The number of vehicles on U.S. roadways has grown by 7 percent over the last five years, but the number of times those vehicles have collided with deer has jumped by 18.3 percent. In its latest study of annual deer claims, State Farm estimates 2.4 million collisions between deer and vehicles occurred in the U.S. during the two-year period between July 1, 2007 and June 30, 2009. Among the 35 states where at least 7,000 deer-vehicle collisions occur per year, New Jersey and Nebraska posted the largest increases of 54 percent. Deer-vehicle collisions also jumped by 41 percent in Kansas, by 38 percent in Florida, Mississippi and Arkansas, by 34 percent in Oklahoma and by 33 percent in West Virginia, North Carolina and Texas. For the third year in a row, West Virginia tops the list of those states where a collision with a deer is most likely. State Farm puts the chance of a West Virginia vehicle colliding with a deer in the next 12 months at 1 in 39. Michigan (1 in 78) remains second on that list followed by Pennsylvania (1 in 94), Iowa (1 in 104) and Montana (1 in 104). The state in which deer-vehicle collisions are least likely is still Hawaii (1 in 9,931). The average property damage cost of these incidents was $3,050, up 3.4 percent from a year ago. Check out I.I.I. tips on avoiding deer-vehicle collisions.