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The crisis facing the EU as migrants from the Middle East and Africa try to reach new homes in Europe, explained with charts and maps. Apr 17, 2014 · How Americans Die The mortality rate fell by about 17 percent from 1968 through 2010, years for which we have detailed data. Almost all of this improvement can be attributed to improved survival .... Variations: weighted Pareto chart, comparative Pareto charts. A Pareto chart is a bar graph. The lengths of the bars represent frequency or cost (time or money), and are arranged with longest bars on the left and the shortest to the right. In this way the chart visually depicts which situations are more significant.