The number of nonfarm private jobs has been growing steadily since the 1950s. That number reached a peak at the end of 2007. Between 1958 and 2007, the number of U.S. jobs grew to 115.4 million from 43.5 million—about 2% per year on average. The steady upward trend reflects the long-run growth of the economy and increased participation in the labor force.

The chart compares employment and that trend. It shows the percentage difference between employment and the trend line generated from monthly employment figures over the past 50 years (July 1960 through June 2010).

What we see is astounding. For almost 25 years—between 1984 and late 2008—the level of employment never fell to more than 3% below the trend line. Over that period, total employment grew by more than 36 million.

Employment fell briefly to about 6% below the trend during two previous recessions: in 1975 and again in 1982-1983. During those periods, the unemployment-rate peaks were 9% (in 1974) and 10.8% (in 1982). The unemployment rate in 2009 peaked at 10.1%.

By 2010, however, employment had fallen to about 10% below the trend, far below any previous level in the last half-century. These figures indicate that as of the first half of 2010, the economy has generated about 12 million fewer jobs than expected. In other words, things are not as bad now as they were in the early 1980s; they are much worse. Recall as well that the unemployment rate of the early 1980s was the result of the ultimately successful battle against inflation.

update: 07/25/2010

Here is another disturbing chart looking at long-term unemployment in historical perspective (source: Greg Mankiw, click to enlarge)