World Economic Outlook - Frequently Asked Questions point 4 for explanation according to the International Monetary Fund (IMF) Further information on the IMF website. World Economic Outlook - Frequently Asked Questions purchasing power parity point 4 for explanation World Economic Outlook - Frequently Asked Questions http://www.imf.org/external/pubs/ft/weo/faq.htm#q4b World Economic Outlook - Frequently Asked Questions http://www.imf.org/external/pubs/ft/weo/faq.htm#q4b IMF World Economic Outlook - Frequently Asked Questions according to the International Monetary Fund (IMF) point 4 for explanation http://www.imf.org/external/pubs/ft/weo/faq.htm#q4b point 4 for explanation PPP World Economic Outlook - Frequently Asked Questions PPP PIB PPP http://www.imf.org/external/pubs/ft/weo/faq.htm#q4b World Economic Outlook - Frequently Asked Questions IMF - Frequently Asked Questions http://www.imf.org/external/pubs/ft/weo/faq.htm#q4b frequently asked questions sul sito dell'Imf expenditure