https://catoatliberty.livejournal.com/5148469.html
"Adding a preliminary estimate of 17 deaths from Parkland to the Mother Jones list brings the total number of deaths up to 816 from 98 mass shootings between 1982 and early 2018 – or just 23 deaths per year."
US population:
Jan 1, 2018 - 327 M;
2000 - 282 M;
1990 - 249 M;
1980 - 227 M.
For comparison:
https://en.wikipedia.org/wiki/List_of_massacres_in_Canada
Note: US population is ~10 times bigger compare to Canada.
