Integrity Competence Prudence
Frequency Of Past Stock Market Corrections
Here is a look back at stock market history since 1900 showing some of the round number percentage declines in the Dow Jones Industrial Average, the length of the decline but more importantly how often it happens. Apropos considering the 4 year anniversary of market lows that were set back in March of 2009.
A history of declines (1900–December 2012)
Source: Capital Research and Management Company