Federal Reserve Board economic symposium in August 2007, Yale University economist Robert Shiller warned, "The examples we have of past cycles indicate that major declines in real home prices—even 50 percent declines in some places—are entirely possible going forward from today or from the not-too-distant future." To better understand how the mortgage crisis played out, a 2012 report from the University of Michigan analyzed data from the Panel Study of Income Dynamics (PSID), which surveyed roughly 9,000 representative households in 2009 and 2011. The data seems to indicate that, while conditions are still difficult, in some ways the crisis is easing: Over the period studied, the percentage of families behind on mortgage payments fell from 2.2 to 1.9; homeowners who thought it was "very likely or somewhat likely" that they would fall behind on payments fell from 6% to 4.6% of families. On the other hand, family's financial liquidity has decreased: "As of 2009, 18.5% of families had no liquid assets, and by 2011 this had grown to 23.4% of families." By mid-2016, the national housing price index was "about 1 percent shy of that 2006 bubble peak" in nominal terms but 20% below in inflation adjusted terms. Subprime mortgage industry collapse In March 2007, the United States' subprime mortgage industry collapsed due to higher-than-expected home foreclosure rates (no verifying source), with more than 25 subprime lenders declaring bankruptcy, announcing significant losses, or putting themselves up for sale. The stock of the country's largest subprime lender, New Century Financial, plunged 84% amid Justice Department investigations, before ultimately filing for Chapter 11 bankruptcy on April 2, 2007, with liabilities exceeding $100 million. The manager of the world's largest bond fund, PIMCO, warned in June 2007 that the subprime mortgage crisis was not an isolated event and would eventually take a toll on the economy and ultimately have an impact in the form of impaired home prices. Bill Gross, a "most reputable financial guru", sarcastically and ominously criticized the credit ratings of the mortgage-based CDOs now facing collapse: AAA? You were wooed, Mr. Moody's and Mr. Poor's, by the makeup, those six-inch hooker heels, and a "tramp stamp." Many of these good-looking girls are not high-class assets worth 100 cents on the dollar ... [T]he point is that there are hundreds of billions of dollars of this toxic waste ... This problem [ultimately] resides in America's heartland, with millions and millions of