The advancements in snowboard technology and safety gear have significantly reduced the number of injuries on the slopes of snowboarding resorts: from 12 injuries per 1,000 snowboarders in 2000 to 4 in 2020. Consequently, the proportion of injuries occurring in other areas of the resort, such as lodges and parking lots, increased from 15 percent of all snowboarding injuries in 2000 to 30 percent in 2020. The frequency of these injuries, which can include incidents like slipping on ice, tends to rise with the level of fatigue experienced by snowboarders. Which one of the following can be properly inferred from the passage?