Why were CD interest rates dropping even before QE?

Date: July 14th, 2019 5:03 PM
Author: TRUMP rulez
https://www.bankrate.com/banking/cds/historical-cd-interest-rates-1984-2016/

(http://www.autoadmit.com/thread.php?thread_id=4302749&forum_id=2#38531391)