2009
| Year | End of Month | US 90-Day Treasury Bill |
| 2009 | January | .12% |
| 2009 | February | .31% |
| 2009 | March | .25% |
| 2009 | April | .18% |
| 2009 | May | .18% |
| 2009 | June | .18% |
| 2009 | July | .19% |
| 2009 | August | .18% |
| 2009 | September | .13% |
| 2009 | October | .09% |
| 2009 | November | .06% |
| 2009 | December | .06% |
