The average account balance, which is skewed by a relatively small number of very large accounts, was $103,866 in 2017, up from $56,030 in 2008. I calculate the total gains during that period at 85.4 percent, or 5.8 percent annually. Compare that with inflation as measured by the consumer price index, which was about 23 percent during that period, and the real increase was about 62 percent.

The picture for the median -- meaning the half-way point -- is less rosy. In 2017 it was $26,331, up from $17,399 in 2008. That represents total gains of 51.3 percent, (about 28 percent adjusted for inflation), or 3.8 percent annually. Keep in mind that a lot of the smaller accounts tend to belong to younger employees and investors who are in the early stages of saving for retirement. These savers have not had as much time to contribute, and their accounts have yet to reap the reward of years of compounding. Fortunately, the investment time horizons of these savers are measured in decades.

Now for the bad news:

Total savings: It's still not enough, and it suggests a large swath of the public either doesn't save enough or can't save. You can blame some of it on lack of wage gains during the past few decades. The huge increase in the cost of health care, housing and education certainly doesn't help. Nor does our profligate, consumption-driven lifestyle. But no matter the reason, the conclusion is inescapable: many Americans are not financially prepared to retire. Perhaps that’s why so many of them are working well into their 80s.

More nudges are needed: Savings for many people are not keeping pace with their pay increases. There is a tendency to set and forget 401(k) contributions, and not revisit the issue ever again. The solution is to have automatic increases for retirement-savings contributions as pay increases.

Target-date funds: These funds automatically adjust the balance of stocks and bonds over time, shifting more heavily toward bonds as the participant gets closer to retirement. The problem is that given increasing modern lifespans, these funds may end up being too conservative in the final decade or two of work for many participants.

To have and to have not: To paraphrase Hemingway, the rich are different: they not only have more money, they also have more retirement savings. The advantages of being wealthy are manifest versus middle- and lower-income savers. Although most of the investment industry targets the wealthy, the underfunded retirement plans of the rest of America continue to be a serious issue.

That’s my quick read of the report.  Reading it not only is a good investment in your own understanding of your retirement-savings plan, but also those of the rest of the nation.

This column was provided by Bloomberg News.

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