Stat: For every trillion dollars the government borrows, a one basis point increase in interest rates translates to an extra $100 million in annual borrowing costs.
Looking at the 10 year Treasury, it went from 1.756% on January 1st to to 1.863% today. That is 11 basis points!
January 31st UPDATE
The 10 year is just under 2% (1.99%). That's another 13 basis points. So add $1.3 billion in annual interest.