How have stocks performed in the past? The following Euro Stoxx 50 index presents the data stored in Eurostoxx and show the end-of-year values of this index for each from 1995 to 2015: Euro Euro Year Stoxx Year Stoxx 1995 1507 2006 4120 1996 1850 2007 4400 1997 2532 2008 2451 1998 3342 2009 2966 1999 4904 2010 2793 2000 4772 2011 2317 2001 3806 2012 2636 2002 2386 2013 3109 2003 2761 2014 3146 2004 2951 2015 3268 2005 3579 a. Construct a time series plot of this index from 1995 to 2015 b. Does there appear to be any pattern in the data