Polk's National Vehicle Population Profile (NVPP)
Polk's National Vehicle Population Profile (NVPP) is a census of all currently registered passenger cars and light-duty trucks in the United States, Canada and Puerto Rico. Polk's New Registration Data provides detailed indicators for new vehicle registrations. The included subsets of the NVPP and New Registration data were funded by Duke's Social Science Research Institute and licensed by Duke University Libraries for the use of current members of the Duke community.
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