12 billion seems to be the number for the frozen assets in 1979.
Page 9 - https://piie.com/publications/papers/sanctions-iran-79-1.pdf
How the heck did it get to the 33 billion number?
That's about a 3% interest rate, compounded annually, for that time period.
Passbook savings rate.
It’s confusing. I thought the 150 billion was the frozen assets fund.