In the '70s, the late Arthur Okun devised the "misery index" -- simply adding together the inflation rate and the unemployment rate. It still remains a handy device for summarizing the overall economic discomfort of American citizens. From 1970 to 1979, the misery index averaged 13.4 percent, ranging from a low of 8.8 percent in 1972 to a high of 17.6 percent in 1975. From 1980 to 1989, the misery index averaged 12.8 percent, but it fell dramatically from 20.6 percent in 1980 to 8.9 percent by 1986. From 1990 to 1999, the index maintained an average 8.8 percent, while...