Yep 300% increase seems fair to me
http://online.wsj.com/articles/cbs-plays-hardball-as-affiliate-fees-pile-up-1408578087
"CBS, which has fewer cable-channel properties than its competitors but has been working to reduce its reliance on advertising in recent years, has made no secret of its plans to aggressively claim its slice of the retransmission-consent-fee pie. It has told investors that it plans to get to $2 billion in retransmission revenue, including money paid by affiliate stations, by 2020, up from $500 million last year."