According to official reports, the suicide rate (the number of suicides per 1,000 people) in Greenland was 17 times higher in 1987 than in 1960
According to official records, there was a certain increase in the number of suicides in Greenland in 1987.
 Because Greenland changed from a hunting and fishing society to an industrial society from 1960 to 1987, and the dramatic change in suicide rate must be the result of this social change