Are bank robberies increasing or decreasing ?

Recently in Chennai two bank robberies took place and the Chennai police conducted an encounter and killed the five robbers. a report: http://www.thehindu.com/news/cities/chennai/article2922641.ece?homepage=true Encounter is the best method to curb this menace of bank robberies. though the discussion was started six years ago, it is relevant as on today also.

Increasing .AND the style is getting very filmy like some robers robbed bank and fled away on speed bikes just like DHOOM

increasing