Bilateral Graph

Source: http://blogs.cfr.org/setser/2006/08/11/despite-what-lex-says-the-euro-dollar-does-matter/

Direct link to graph: http://blogs.cfr.org/wp-content/uploads/roubini/bs_chart1.png

A bilateral graph displays both positive and negative data representation against a zero line. This graph illustrates how U.S. exports to Europe have moved with the exchange rate.