World Population (IMAGE) University of Washington Caption The top panel shows total world population projected to 2100. Dotted lines are the range or error using the older scenario method, while shaded regions are the uncertainties using statistical methods. The darker shading is the 80 percent confidence bars, and the lighter shading shows the 95 percent confidence bars. At the bottom are the population projections for each continent. Credit A. Raftery / Univ. of Washington Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.