Norway has led the list for the past four years. . Aside from the overall index, the report produces indicators on womenýs equality, income inequality and consumption, poverty and other categories that countries use to measure development. In Canada, for example, the index has been used in advertisements to attract business. . The industrialized nations as usual were in the top 20, their ratings close to one another. Belgium was in sixth place, followed by Iceland, the United States, Japan, Ireland, Switzerland, Britain, Finland, Austria, Luxembourg, France, Denmark, New Zealand, Germany and Spain. . At the bottom of the list for the seventh year was Sierra Leone, emerging from a decade of civil war. Right above it were Niger, Burkina Faso, Mali and Burundi. . The worldýs newest nation, East Timor, was included for the first time and ranked 158th out of 177 countries. . In Africa, the AIDS crisis reduced the average life expectancy in many countries to 40 years or less, making it the biggest factor in the decline of overall human development indicators, the report said. In comparison, the average life expectancy in Norway was 79 years. . At least 20 nations suffered development reversals since 1990, 13 of them in Africa: Angola, Central African Republic, Lesotho, Mozambique, Sierra Leone, Swaziland, Zambia and Zimbabwe, the report said. . ýýThe AIDS crisis cripples states at all levels because the disease attacks people in their most productive years,ýý said Mark Malloch Brown, head of U.N. Development Program. . In Latin American and Caribbean nations, Barbados again headed the list, in 29th place. Argentina ranked 34th, Chile, 43; Costa Rica, 45; Uruguay, 46; Bahamas, 51; Cuba, 52; Mexico, 53; Venezuela, 68. Surprisingly, Brazil dropped to 72nd place, one above Colombia, compared to last year when it ranked 65th. . In Asia, Hong Kong was in 23rd place and Singapore in 25th, South Korea in 28th, Thailand, 76; Philippines, 83; China, 94; India 127; Bangladesh 138 and Pakistan 142. . In the Middle East, Israel led the list in 22nd place, followed by Cyprus in 30th place, Bahrain, 40; Kuwait, 44; Qatar, 47; United Arab Emirates, 49; Libya, 58; Oman 74; Saudi Arabia, 77; Lebanon, 80; Jordan, 90; Tunisia, 92; Palestinian territories 102; Syria, 106; Algeria, 108; Egypt, 120; Morocco, 125 and Yemen, 149