Paul Krugman writes:
…in discussions of Social Security it’s often argued that in the program’s early years, nobody could have imagined the increases in life expectancy that have actually occurred, so nobody could have imagined that we’d have as many beneficiaries relative to the number of people of working age. And I thought I knew that this was wrong — that people in the 30s and 40s did know about rising life expectancy, and expected it to continue.
Well, it turns out that Table 9 in the 1945 report (pdf) shows high and low estimates of the population distribution looking forward as far as 2000, which we can compare with the actual population distribution in 2000.
What you can see right away is that the SSA expected a much smaller population than we actually ended up with — the baby boom and immigration weren’t anticipated. But they also expected a somewhat older population than we actually got: their “low” estimate put the ratio of seniors to adults under 65 at 20.8%, almost the same as the actual 21.1%, while the “high” estimate put the ratio at 29.1%. That is, in 1945 the Trustees thought that America would probably be a grayer, older country by 2000 than it actually ended up being.
All this has only limited bearing on the future, as we move into an even older country. But it’s still interesting, at least insofar as it debunks a common Beltway legend.
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