2. Assume that the prepayment history of a particular pool is given (in terms of PSA) for the first 12 months after the loans were originated as: 186 PSA,

122 PSA, 241 PSA, 177 PSA, 135 PSA, 111 PSA, 98 PSA, 86 PSA, 122 PSA, 131 PSA, 129 PSA, 144 PSA. What is the arithmetic average of prepayments on this pool in terms of the SMM prepayment measure?