PSA benchmark
Assumes monthly prepayment rate for a mortgage pool increases as it ages.
100 PSA: CPR = 0.2% for the first month increases by 0.2% per month up to month 30
CPR = 6% for months 30 to 360
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Assumes monthly prepayment rate for a mortgage pool increases as it ages.
100 PSA: CPR = 0.2% for the first month increases by 0.2% per month up to month 30
CPR = 6% for months 30 to 360