Reference 1: US $.
Reference 2: Luxembourg, Switzerland, Norway, Qatar, Ireland, United States, Singapore, Denmark, Australia, Iceland, Sweden, San Marino, United Kingdom, Austria, Netherlands, Canada, Finland, Hong Kong, Germany, Belgium, United Arab Emirates, France, New Zealand, Israel, Japan, Brunei, Italy, Puerto Rico, Kuwait, South Korea, Spain, Bahamas, Bahrain, Cyprus, Malta, Taiwan, Slovenia, Saudi Arabia, Portugal, Trinidad and Tobago, Greece, Estonia, Czech Republic, Equatorial Guinea, Oman, Saint Kitts and Nevis, Palau, Slovakia, Barbados, Uruguay, Seychelles, Argentina, Lithuania, Antigua and Barbuda, Latvia, Chile, Panama, Poland, Hungary, Croatia, Lebanon, Costa Rica, Kazakhstan, World[7], Malaysia, Mexico, Russia, Suriname, Grenada, Turkey, Mauritius, Maldives, Romania, Brazil, Venezuela, Saint Lucia, China, Gabon, Dominica, Bulgaria, Botswana, Dominican Republic, Saint Vincent and the Grenadines, Turkmenistan, Montenegro, Libya, Ecuador, Peru, Colombia, Belarus, Thailand, Azerbaijan, South Africa, Serbia, Jamaica, Namibia, Micronesia, Fiji, Iran, Macedonia, Republic of, Belize, Iraq, Samoa, El Salvador, Algeria, Bosnia and Herzegovina, Guyana, Tonga, Paraguay, Jordan, Mongolia, Albania, Tunisia, Guatemala, Sri Lanka, Georgia, Egypt, Swaziland, Armenia, Marshall Islands, Indonesia, Bolivia, Angola, Cape Verde, Tuvalu, Philippines, Morocco, Nigeria, Vanuatu, Papua New Guinea, Bhutan, Honduras, East Timor, Sudan, Ukraine, Uzbekistan, Vietnam, Congo, Republic of the, Nicaragua, Moldova, Djibouti, Laos, Solomon Islands, India, Sao Tome and Principe, Kenya, Pakistan, Kiribati, Ghana, Zambia, Yemen, Côte d'Ivoire, Mauritania, Bangladesh, Cameroon, Myanmar, Cambodia, Kyrgyzstan, Lesotho, Zimbabwe, Chad, Tanzania, Tajikistan, Senegal, Nepal, Mali, South Sudan, Benin, Haiti, Comoros, Rwanda, Eritrea, Ethiopia, Sierra Leone, Uganda, Burkina Faso, Afghanistan, Guinea-Bissau, Togo, Guinea, Mozambique, Congo, Democratic Republic of the, Liberia, Gambia, The, Niger, Madagascar, Malawi, Central African Republic and Burundi.
Source: http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)_per_capita
Reference 2: Luxembourg, Switzerland, Norway, Qatar, Ireland, United States, Singapore, Denmark, Australia, Iceland, Sweden, San Marino, United Kingdom, Austria, Netherlands, Canada, Finland, Hong Kong, Germany, Belgium, United Arab Emirates, France, New Zealand, Israel, Japan, Brunei, Italy, Puerto Rico, Kuwait, South Korea, Spain, Bahamas, Bahrain, Cyprus, Malta, Taiwan, Slovenia, Saudi Arabia, Portugal, Trinidad and Tobago, Greece, Estonia, Czech Republic, Equatorial Guinea, Oman, Saint Kitts and Nevis, Palau, Slovakia, Barbados, Uruguay, Seychelles, Argentina, Lithuania, Antigua and Barbuda, Latvia, Chile, Panama, Poland, Hungary, Croatia, Lebanon, Costa Rica, Kazakhstan, World[7], Malaysia, Mexico, Russia, Suriname, Grenada, Turkey, Mauritius, Maldives, Romania, Brazil, Venezuela, Saint Lucia, China, Gabon, Dominica, Bulgaria, Botswana, Dominican Republic, Saint Vincent and the Grenadines, Turkmenistan, Montenegro, Libya, Ecuador, Peru, Colombia, Belarus, Thailand, Azerbaijan, South Africa, Serbia, Jamaica, Namibia, Micronesia, Fiji, Iran, Macedonia, Republic of, Belize, Iraq, Samoa, El Salvador, Algeria, Bosnia and Herzegovina, Guyana, Tonga, Paraguay, Jordan, Mongolia, Albania, Tunisia, Guatemala, Sri Lanka, Georgia, Egypt, Swaziland, Armenia, Marshall Islands, Indonesia, Bolivia, Angola, Cape Verde, Tuvalu, Philippines, Morocco, Nigeria, Vanuatu, Papua New Guinea, Bhutan, Honduras, East Timor, Sudan, Ukraine, Uzbekistan, Vietnam, Congo, Republic of the, Nicaragua, Moldova, Djibouti, Laos, Solomon Islands, India, Sao Tome and Principe, Kenya, Pakistan, Kiribati, Ghana, Zambia, Yemen, Côte d'Ivoire, Mauritania, Bangladesh, Cameroon, Myanmar, Cambodia, Kyrgyzstan, Lesotho, Zimbabwe, Chad, Tanzania, Tajikistan, Senegal, Nepal, Mali, South Sudan, Benin, Haiti, Comoros, Rwanda, Eritrea, Ethiopia, Sierra Leone, Uganda, Burkina Faso, Afghanistan, Guinea-Bissau, Togo, Guinea, Mozambique, Congo, Democratic Republic of the, Liberia, Gambia, The, Niger, Madagascar, Malawi, Central African Republic and Burundi.
Source: http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)_per_capita
