CREDIT MARKET. A LOOK AT LONG-TERM INTEREST RATES IN THE UNITED STATES ...
. Federal Reserve Bank of St. Louis

Note that the corportate bond yield has started to decline only recently. The Treasury bond yield, on the other hand, collapsed long ago (more on that in the next session).

- 10-year Treasury Note [chart]

- 10-year Moody's Baa bond [chart]