Recession is a normal, albeit unpleasant, part of the business cycle. However, one-time crisis events can often trigger the onset of a recession. The global recession of 2009 brought a great amount of attention to the risky investment strategies used by large financial institutions, along with the global nature of the financial system. As a result of the wide-spread global recession, the economies of virtually all the world's developed and developing nations suffered significant setbacks. Numerous government policies were implemented to help prevent a similar future financial crisis as a result. Typically, a recession lasts from six to 18 months, and interest rates usually fall during these months to stimulate the economy.