I think the original headline post and the chart are talking apples and oranges.
Saving more after taxes and percentage of disposable income are two different things entirely.
Look at the reality of a situation... If a man has 10$ a week in disposable income ( note not after tax income, but disposable income as in bea chart) and saves 1 dollar a week his percentage is 10%.
He saved 1 dollar.
If the same man under pressure of rising costs ( 2001 insurance etc and fuel spike,) last year fuel spike.. and his disposable income drops to 10 cents... but he saves a nickle... he has saved 50% but only 5 cents.
Numbers will say anything if you torture them long enough.. If you use a chart model for one thing, but print a story saying something entirely different... The word for that is propaganda... ( polite for big lie!)
On Friday, the government reported Americans' savings rate, as a percentage of after-tax incomes, rose to 2.9 percent in the last three months of 2008. That's up sharply from 1.2 percent in the third quarter and less than 1 percent a year ago.