The yield had dropped from 5.64 percent just since the end of last year.
By late in the day, the yield had dropped to 2.21 percent.
The yield had dropped by 20% over the previous few years.
The simple yield also dropped 4 basis points, to 3.03 percent.
The yield on the long bond dropped to 6.86 percent.
President Clinton also helped, as the yield on the new 30-year bond dropped to 7.15 percent.
And the yield on the 10-year note dropped 10 basis points, to 6.28 percent.
The yield has dropped almost half a percentage point since the end of July.
The yield on the 10-year note dropped to 4.64 percent, its lowest level since the fall of 1998.
The 10-year note, for example, was up 17/32 as the yield dropped to 5.93 percent.