Based on an article I read, the 'Ndrangheta made more money one year than Wal Mart and the Deutsche Bank combined. I think it was in 2013.
60 billion USD apparently if you take them as a collective unit. They're serious players in the European drug trade. They were also largely left unchecked throughout the 80s and 90s when the Italian state went after Cosa Nostra, the result of which has led to their rapid growth in wealth and power.
