Overfishing and pollution of U.S. coastal waters have resulted in an increased dependence by the United States on the fishing grounds of other countries. The table below describes the annual fish catch (in thousands of metric tons) in all fishing areas of Peru and Chile for the years 2000 to 2013.

a. Compute an exponentially smoothed series for both Chile and Peru, using a smoothing coefficient of w = .5.
b. Plot both actual series and both smoothed series on the same graph. Describe the differences in variation of catches over time between the two countries. For example, do they move up and down together over time?

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Chile Year Peru 2000 2001 4,692 4,363 4,817 4,176 5,584 5,029 4,971 4,636 4,398 4,247 10,665 7,990 8,775 6,100 9,627 9,416 7,046 7,250 7,406 6,959 4,350 8,341 4,921 5,980 2002 2003 2004 2005 2006 2007 2008 2009 2010 3,381 4,018 3,644 2011 2012 2013 2,804