Another way to look at this is to compare the cash on hand during various recessionary periods. I don't think we will see the same boom after the bust this time around, but we must be getting close to the bottom now.
http://www.theglobeandmail.com/servlet/story/RTGAM.20090305.wheinzl0306/BNStory/Business/
In the United States, there was about $8.85-trillion (U.S.) sitting in cash, bank deposits and money market funds at the end of 2008. That was equal to 74 per cent of the market value of all publicly traded companies – the highest ratio since 1990, according to a Bloomberg report.
The report went on to say that when the amount of cash relative to stock prices reaches extremely high levels, the market often rebounds forcefully.
In 1974, for example, cash reached a record 120 per cent of U.S. stock market capitalization. Over the next six months, stocks rose 31 per cent. In 1982, with the ratio at 95 per cent, the S&P 500 posted a six-month gain of 36 per cent. And in the recession of 1990, the ratio reached 75 per cent and stocks jumped nearly 30 per cent in the following year.