I don't see Japan in these stats. I cannot trust these stats, because gun laws are very strict in most of Europe, and except for hunters, soldiers or policemen, virtually nobody has one. I am sure that there isn't 6% of the Belgian households who have a gun. Maybe these stats were made by diving the number for the total sales of gun by the number of households, without actually knowing how many households had guns (could be that the army or the police bought 99% of the guns). Or maybe they count
air guns or alarm pistols as guns.
If you check the number of people in the
police and in the
army you get the number of households with a gun with a household member in the army or police.
If you divide the country's population by the
average size of households, you get the number of households. Compare the two to get the percentage of households with a gun who have a member in the police/army.
Let's take Germany : 82 million divided by 2.2 people by households = 37 million households.
470,000 (police/army personnel) divided by 37 million (households) x 100 = 1.27% of households with a gun only for households with a member in the police/army.
Now for Japan : 127 million/2.8 = 45 million
382,000 / 45 million x100 = 0.85%
I found out that an additional 228,000 Japanese had a hunting licence for a shotgun or rifle (in 1991, see
Japanese government stats). So the total percentage of Japanese households legally owning a gun would be closer to this :
610,000 / 45 million x100 = 1.35%
There is a disparity because the gun licence stats are for 1991, and the population I used is for 2006. In 1991 the Japanese population was not 127 million but 124 million.
So, nearly 1.5% of Japanese households probably have a gun, just because they have a family member in the police or SDF, or through a hunting licence. Add to this the yakuza and other people who may have an unregistered gun, and it could be up to 2%, more than your stats for the UK.