How many ultimate rates of mortality decline does the Social Security Administration choose?

The number of ultimate rates of mortality decline has changed over time. Between 1982 and 2011, the number chosen equaled 210 (5 broad age groups x 2 sexes x 7 causes of death x 3 cost scenarios). Since 2012, SSA reduced the number of causes of death from 7 to 5, applied uniform ultimate rates of decline for males and females, and uniformly scale the ultimate rates of decline for the low and high cost as ½ and 5/3 of the set of intermediate cost rates of decline.

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