Long-term variation of exposure levels to electromagnetic fields

A decade after legislated to limit the exposure to electromagnetic fields, governments have amounts of data on measured power density levels all around their countries, but short information and analysis reach the scientific community. So, we have studies on exposure values averaged at short time periods, but not analysis on long-term data. This work tries to open a door on such area, by using the Spanish government data for all regions in Spain during the period 2002 to 2011. Results show a stabilization on the measured density power in the last years, at levels lower than those at early 21^st century, although the number of users has significantly grown. In general terms, the poorer the region, the lower the exposure levels are; and the more touristic the region, the larger the exposure levels are.