Sweden is trumpeting that its decline in crime is a result of becoming a cashless society. (HT: MR which indicates that this is not unexpected.) Curiously WaPo also points to an unprecedented (my word) rise in crime - thieves are turning to electronics and Tide detergent. (See also here for more on how Tide detergent is becoming an alternate currency nationally.) I would label the latter events as something that is also not unexpected.