Why has Sweden's rate of deadly violence dropped to lowest level in 10 years?

The number of people killed as a result of deadly violence in Sweden has fallen to the level last seen in 2014, before the sharp spike in deadly shootings and bomb attacks brought Sweden's gang problems global attention. Why is lethal violence down and is it a dip or a declining trend?

Why has Sweden's rate of deadly violence dropped to lowest level in 10 years?
The number of people killed as a result of deadly violence in Sweden has fallen to the level last seen in 2014, before the sharp spike in deadly shootings and bomb attacks brought Sweden's gang problems global attention. Why is lethal violence down and is it a dip or a declining trend?