I have just found the stats per region (I didn't see them at the bottom of the stats page first and had to make all the calculations by myself). Well, out of the 20,007 people arrested :
- 83,3% were from Asia
- 10,9% were from South America
- 1,3% were from North America (0,8% from USA)
- 1,5% were from Europe
- 1,2% were from Russia
- 1,3% were from Africa
- 0,5% were from Oceania
Considering only the 8,725 crimes (刑法犯), so not the offences such as visa overstaying, however,
- 74,5% were from Asia
- 17,7% were from South America
- 2,2% were from North America (1,4% from USA)
- 2% were from Europe
- 1,8% were from Russia
- 0,9% were from Africa
- 0,8% were from Oceania
The comparison between the number of crimes and offences committed by Japanese and foreigners in Japan is also interesting. Considering that the foreign population of Japan represents 1,46% of the 127 million people living in Japan, it is easy to see what kind of crime/offence has the highest incidence rate among foreigners.
The following crimes exceed the proportion of foreigners who committed them :
Serious crimes (悪犯) : 5,7% (committed by foreigners)
Thefts : 2,4%
Intellectual property : 3,6%
- Prostitution : 1,6%
Offences : 15,3% (but includes immigration offences - without 3,2%)
The following crimes have a lower incidence among foreigners than Japanese :
- Violent offences : 1,3% (I guess that includes people fighting in trains and yakusa activities for the 98,7% of Japanese)
Now, let's calculate the proportion of criminals and offenders among all nationalities to see which one are more problematic regardless of the actual number of people living in Japan for each country. To achieve this I just divide the number of crimes by the number of resident for each country (stats from Japan Statistical Bureau.
[country] [residents] / [people arrested (crimes + offences)] = % (crimes + offences)
Japan : 127,435,000 / 433,305 ( 370,877 + 62,428) = 0,34% (0,29% + 0,05%)
Korea : 625,422 / 1,793 (496 + 1,297) = 0,29% (0,08% + 0,21%)
China : 424,282 / 8,996 (4,444 + 4,552) = 2,12% (1,05% + 1,07%)
Brazil : 268,332 / 1,224 (1005 + 219) = 0,46% (0,37% + 0,09%)
Philippines : 169,359 / 1,333 (329 + 1,004) = 0,79% (0,19% + 0,6 %)
Peru : 51,272 / 573 (364 + 209) = 1,12% (0,71% + 0,41%)
USA : 47,970 / 166 (119 + 47) = 0,35% (0,25% + 0,1%)
Thailand : 33,736 / 699 (68 + 631) = 2,1% ( 0,23% + 1,87%)
Vietnam : 21,050 / 718 (549 + 169) = 3,4% (2,61% + 0,79%)
UK : 18,508 / 72 (47 + 25) = 0,39% (0,25% + 0,14%)
Russia : 6,026 / 244 (160 + 84) = 4,05% (2,66% + 1,39%)
Iran : 5,769 / 410 (47 + 363) = 7,1% (0,81% + 6,29%)
Pakistan : 8,225 / 301 (44 + 257) = 3,7% (0,53% + 3,17%)
Bangladesh : 8,703 / 307 (28 + 279) = 3,5% (0,32 + 3,18%)
By region :
Asia : 1,371,171 / 16,666 (6,498 + 10,168) = 1,22% (0,47% + 0,75%)
South America : 334,602 / 2,180 (1,542 + 638) = 0,65% (0,46% + 0,19%)
North America : 63,201 / 262 (191 + 71) = 0,41% (0,3% + 0,11%)
Europe (Russia excluded) : 49,262 / 285 (176 + 109) = 0,58% (0,36% + 0,22%)
Oceania : 15,898 / 100 (75 + 25) = 0,63% (0,47% + 0,16%)
Africa : 9,694 / 268 (81 + 186) = 2,76% (0,84% + 1,92%)
Highest rate of crimes/offences per country
That means that by nationality, the highest rate of criminals and offenders combined is found among Iranian (7,1%), Russian (4,05%), Pakistani (3,7%), Bangldeshi (3,5%), Vietnamese (3,4%), Chinese (2,12%), Thai (2,1%) and Peruvian (1,12%), which are the only countries with a large number of residents in Japan with a percentage above 1%.
The Japanese crime rate is 0,34%, similar to that of US citizens(0,35%), Brits (0,39%), Brazilians (0,46%). Koreans have the lowest crime rate, which is worth mentioning as they are the single largest group of foreigners in Japan (1/3 of all foreigners).
Per continent, Africans have by far the highest crime rate (2,76%), followed by Asians (1,22%).
Highest rate of crimes only per country
If we omit the offences, as most of them are visa-related and cannot compare to Japanese rates, and concentrate on real crimes, we find a completely different ranking though. Iranians that topped the total of crimes and offences are actually for the greatest part offenders only. But most Vietnamese, Russians, and even Japanese were arrested for more crimes than offences. Here is the real crime rate :
- Russians (2,66%)
- Vietnamese (2,61%)
- Chinese (1,05%)
- Iranians (0,81%)
- Peruvians (0,71%)
- Pakistani (0,53%)
- Brazilians (0,37%)
- Bangladeshi (0,32%)
- Japanese (0,29%)
- Americans (0,25%)
- Britons (0,25%)
- Thai (0,23%)
- Philippinos (0,19%)
- Koreans (0,08%)
These numbers are extremley interesting because it shows that combined crimes and offences can be very misleading. Thai and Vietnamese have a similar combined number (699 and 718) but 90% of Thai arrested are offenders, while about 80% of Vietnamese arrested are criminals. As a result, the real crime rate of Vietnamese is 11 times higher than that of Thais.
We also see that Japanese themselves are more likely to commit real crimes than Westerners, Thai, Filipinos and Koreans. Koreans are by far again the most docile residents in Japan, with an fantastically low crime rate (0.08%), 4,5 times lower than that of Japanese.
What these number teach us is not to assimilate neighouring countries haphazardly. In Japan, Chinese commit 13x more crimes than Koreans, and Vietnamese also 13x more than Thai or Filipinos. Russians commit over 10x more crimes than British or Americans citizens.
In the continent ranking, Africa still has the highest rate (0,84%), but it is this time much closer to the average. Asians, South Americans and Oceanians have about the same real crime rate (0,47%), while North Americans and Europeans have the lowest (0,3 and 0,36%).
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