Stacked bar chart

The Economist recently reported that the decline of infectious diseases in developing countries will mean that care for chronic conditions will be more important.

The trend for these two cases is shown in a stacked bar chart.

The argument would be a bit more compelling if data for 2010 were included.

The stacked bar presentation works well because the values sum to 100%, there are only two values per stacked bar, and The Economist does not like to use tables in articles. The bars are somewhat redundant, but they display the relative values at a glance. It is appropriate that only the chronic case is labelled since it is the focus of the article.

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