The new Penn World Table, Version 6.2, comparing standards of living across countries, has just been released. The latest figures are for 2004, and, because of data lags, not all countries are included. Yet these numbers are valuable because they are of exceptional quality and they correct systematically for relative price differences across countries, which sometimes leads to surprising results.
Among the 82 countries for which 2004 data are now available, there has been really good news: real per capita GDP has risen by an average of 18.9% between 2000 and 2004, or 4.4% per year. People generally are a lot better off than they were just a few years ago. At this rate, real per capita GDP will double every 16 years.