Number of reported avalanches in Switzerland from 1936/37 to 2011 with the number of people involved (blue) and the proportion (red) of serious accidents (injuries, deaths, completely buried) compared to the total. As is clear, the number of avalanches that involved people has increased greatly, but the % of those that caused serious accidents has reduced (partly due to more care taken in reporting about avalanches, but certainly also due to better preparation and ability to deal with emergencies)

© Techel, F. and Zweifel, B., 2013