Mortgage Rates Fall to Lowest Since 2004 on Fed Cut

“The average U.S. rate for a 30-year fixed mortgage declined to 5.31 percent today, the lowest since March 2004 when the Fed’s benchmark rate was 1 percent, according to Bankrate Inc., a research firm in North Palm Beach, Florida.”

Is Bankrate the only company collecting interest rate information on mortgage loans nationwide? Why doesn’t Bloomberg devote someone to building such a database? I love historical price and interest rate and currency rate data (heck, I love all historical financial data). Who keeps the most complete historical record or mortgage loan rates? The Fed?