US mid cap index returns

Data Sources

 * Variance Among Indexes Craig Isrealsen, JOI, May /June 2007.
 * Russell Index historical performance cycles
 * Morningstar Market Barometer Ten-Year Recap 2000-2009
 * MSCI 10 Year Annual Returns
 * Vanguard; Ishares mid cap overview pages; SPDR semi-annual reports
 * Dow Jones Indexes search for historical returns