Clients will notice a decrease in all population attributes when comparing annual tables that include data from 2005 and beyond to earlier tables. This is caused by a redefinition of forest land. Prior to 2005, forestland was defined as land having, or that formerly had, 5 percent or more cover of tally tree species. The Forest Service Research Washington Office staff determined that the international definition of forestland uses a 10 percent cover minimum. Based on this new criterion, office staff re-examined and reclassified all plots collected under the annual data collection protocol. This reclassification resulted in plots that were formerly called forest to be put in the nonforest category. There is an overall decrease in forest area and associated attributes, such as volume.