Some Numbers

Frederic Lemieux Professor of the Practice and Faculty Director of the Master's in Applied Intelligence, Georgetown University has done some research about mass shootings.

First, they're getting more frequent. The days separating mass shooting occurrence went from an average 200 days during the period of 1983 to 2011 to 64 days since 2011.

Next, look at the number of mass shootings, based on the number of guns per 100 inhabitants  (My apologies that the numbers don't line up.)

Country      Mass Shootings
Australia            4
Austria               1
Belgium             2
Canada              4
Denmark           0
Finland              2
France               6
Germany           7
Greece               0
Holland             2
Hungary          0
Iceland            0
Ireland            0
Italy                0
Japan              0
Luxembourg  0
New Zealand 3
Norway         1
Poland           0
Portugal        1
Spain            1
Sweden         2
Switzerland  2
United Kingdom 3
United States 78