 Several states have entered into operating partnerships with Amtrak, notably California, Pennsylvania, Illinois, Michigan, Oregon, Missouri, Washington, North Carolina, Oklahoma, Texas, Wisconsin, Vermont, Maine, and New York, as well as the Canadian province of British Columbia, which provides some of the resources for the operation of the "Cascades" route.With the dramatic rise in gasoline prices during 2007–08, Amtrak saw record ridership.Capping a steady five-year increase in ridership overall, regional lines saw 12% year-over-year growth in May 2008.