2008: Some Final Numbers.

The Mercury News has the details on the Wall Street's annus horribilis:

The Russell 3000, which covers 98 percent of investable equities, shed $6.7 trillion or 39.7 percent of its value during 2008.
The S&P 500 was down 38.5 percent, its worst performance since 1937!
The Dow Jones industrial average was off 33.8 percent — the worst return since 1931.
The five worst-performing stocks in Silicon Valley all lost more than 90 percent of their value.
Every single technology index fell this year. Biotech did the "best," with a 17.7 percent drop; Internet, computer, networking and semiconductor stocks all were down more than 40 percent, and disk-drive stocks were off nearly 61 percent.

Also Investors Intelligence reported that the average stock lost 54% last year.