1. Do a Google search on Ralph Salerno, and you will find excerpts of testimony that he provided to various Congressional committees on the Mafia's economic impact.
2. Buy "Five Families" by Selwyn Raab--a new book that's comprehensive on the Mafia, and that has economic impact info scattered in many chapters (the money is VERY big).

Ntra la porta tua lu sangu � sparsu,
E nun me mporta si ce muoru accisu...
E s'iddu muoru e vaju mparadisu
Si nun ce truovo a ttia, mancu ce trasu.