Chicago had a lot of unmade, non Italian guys that were very high up the ladder, so the number of made guys could be misleading. Wasn't there also a time when Chicago didn't even make Italian members? No ceremony or nothing? Basically, you just took orders and rose up the ranks? Recall reading that somewhere, maybe Frattiano's book.

"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea