GCPBA, as part of its tracking and analysis of both commercial and private usage of the Colorado river corridor thru the Grand Canyon, has converted the tabular data provided by the NPS at https://www.nps.gov/grca/planyourvisit/upload/Backcountry_and_River_ Use_Statistics_2019.pdf into plots by season for years starting in 2007 thru 2019. The data show an 12 year historical trend for each of the 4 seasons for the # of launches, user days, and passengers. The plotted data is shown here.