https://www.depositaccounts.com/blog/historical-cd-rates.html#CDRatesinthe2010s and https://www.bankrate.com/banking/cds/historical-cd-interest-rates/ both show historical CD rates for 1Y and 5Y tenors, from 2010 onward.

There are multiple rates to compute the amount of interest. I think a fair choice is rolling-12M, given her liquidity needs.