CRIME in Japan is dropping amid the longest economic expansion in almost three decades, making one of the safest nations even safer.

The number of recorded crimes fell to 915,042 last year, the lowest level in the postwar era, according to data released by the National Police Agency earlier this month. That came as the nation鈥檚 economy had its longest run of sustained growth in almost 30 years, which drove the unemployment rate down to 2.8%.

鈥淭he economic recovery is helping crimes go down,鈥 said Akiyoshi Takumori, chief economist at Sumitomo Mitusi Asset Management Co. 鈥淭he need to steal goes down when you have a secure job.鈥

There may be other factors for the drop in crime — closer coordination between local volunteers and the police, and the wider use of surveillance cameras have helped prevention, according to the National Police Agency.

But it鈥檚 not just the reduction in crime that鈥檚 making people feel safer.

Suicides are at their lowest level since 1991, and odds of getting back lost money are rising in Tokyo.

Still, it鈥檚 not rosy everywhere. Masayuki Kiriu, a professor of social psychology at Toyo University in Tokyo, said the forms of crime may be changing. Instead of robbing a safe or bank, criminals are trying to take advantage of the increasing number of old people, who generally have more financial assets.

There鈥檚 been an increase in so-called 鈥済randparent scams,鈥 in which a criminal calls an elderly person, pretends to be a relative (often a child or a grandchild) in distress, and asks for money.

鈥淭hose who commit crimes figure a bank robbery doesn鈥檛 make sense considering the costs and benefits,鈥 said Kiriu, who used to work at a national research institute for police science. 鈥淭hey are acting rationally in their view.鈥 — Bloomberg