Doh! The number to look at is the number of deaths per 100,000 of population, not the absolute numbers. Otherwise there would be no  way to compare Canadian data with the much much higher numbers for the USA population. 

The USA has the highest rate of gunshot death, 80% suicide, among developed countries, followed by Finland. 

You get exactly 1 guess which 2 countries have the highest rate of guns in homes, and the 2nd highest rate. That is correct, #1 USA, #2 Finland. 

Switzerland used to be #3 in both metrics, due to the Swiss Militia sending home automatic weapons and ammo with members, but I read that was such a No Brainer Public Health Issue that the Militia stopped doing that, under public pressure after a Militia member shot and killed his ex, a prominent TV personality. That was high profile, but a common scenario among Militia members. The Swiss military firearm fatality rate per 100K was higher than the total gunshot death rate in France, Germany and Mafia plagued Italy.