(St. Paul, MN) -- Fire deaths have gone down in Minnesota over the past 40 years -- even as the population and number of recorded fires each year is going up. According to a new report from the state Fire Marshal's office, 50 people died from fires in Minnesota in 2012--down from 56 in 2011. There were 16-thousand-581 reported fires in 2012, a 12-percent increase over the year before. Three people died in fires where there were working smoke alarms and 10 died from careless smoking. The report shows cooking continued to be the number-one cause of structure fires in 2012. No firefighters died in the line-of-duty last year.