Back in 1950, the average retirement ages for men and women in the OECD were 64.5 years and 63 years respectively.

ECONOMIST: Pension sums don��t add up

Private school students do better on the National Assessment of Educational Progress, but the gap between average scores is about the same at ages 13 and 17 as at 9.

FORBES: Public Choice

By 2025, the report forecast, growth would decline to an annual average of 5%, as the Chinese work force ages, productivity slows and infrastructure and other investments produce lower returns.

WSJ: China Reform Suggestions Vague on Party Role

All ages were involved: the average was 41 years, though an 82-year-old also tied the knot with his partner.

ECONOMIST: The wedding waltz

According to the CouchSurfing Web site, the average age of members is twenty-eight, with more than a third between the ages of eighteen and twenty-four (seven hundred and ninety-three members are between eighty and eighty-nine).

NEWYORKER: You��re Welcome

The differences between the two countries are even more striking if you look at their average ages.

ECONOMIST: Demography

And, contrary to popular myth, this consumer is actually someone between the ages of 35 to 54, with 46 being the average age, BofA says.

FORBES: Bank of America Goes Digital Only For Launch Of Merrill Edge

But folks ages 25 to 29 fessed up to being by far the worst (with an average of more than three sins each).

MSN: Most of Us are Social Media Sinners

It boasts millions of users, concentrated between the ages of 13- and 24-years-old (in the UK), and an average user spends 40 minutes per session.

CNN: Fast forward: Broadband drama