Are historical motor-vehicle registration data available?
Yes. The Summary to Highway Statistics is done by the Office of Highway Policy Information every 10 years. The Highway Statistics Summary to 1995 is the most current report. In some instances, corrections or revisions have been made in previously published data, consequently the figures shown in Highway Statistics Summary to 1995 supersede those in previous Highway Statistics Summaries, as well as previous annual issues of the Highway Statistics Series.