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US Annual Tornado Death Tolls, 1875-present
http://www.norman.noaa.gov/2009/03/us-a ... 5-present/

Top 10 Most Deadliest Tornado Years
1.) 1925 794
2.) 2011 553
3.) 1936 552
4.) 1917 551
5.) 1927 540
6.) 1896 537
7.) 1953 519
8.) 1920 499
9.) 1908 477
10.) 1909 404

Top 10 Least Deadliest Tornado Years
1.) 1910 12
2.) 1986 15
3.) 2009 21
4.) 1981 24
5.) 1996 25
6.) 1972 27
7.) 1980 28
8.) 1937 29
9.) 1895/1962/1995 30
10.) 1963 31

Mean Annual Tornado Death
144

Median Annual Tornado Death
84

Standard Deviation Annual Tornado Death
145