- * Example generated by -dataex-. To install: ssc install dataexclearinput long stkcd float(year AC)2 1998 .08876362 1999 .048871252 2000 .050088032 2001 .282185822 2002 .041525332 2003 .248821652 2004 -.0128715182 2005 .03797932 2006 .2424732 2007 .32479682 2008 .04669612 2009 -.0236785042 2010 .047979252 2011 .038073992 2012 .040298072 2013 .043224952 2014 -.046821882 2015 .0194792432 2016 -.018347712 2017 -.054310632 2018 .0134330064 1998 -.155402564 1999 -.116220024 2000 -.064529054 2001 .015001284 2002 .229782664 2003 -.0088101484 2004 -.015504894 2005 -.138321714 2006 .07717044 2007 -.0149277774 2008 -.076035174 2009 -.250660664 2010 .13855614 2011 -.05522044 2012 -.049659394 2013 .139124784 2014 .087378414 2015 -.0071086084 2016 -.271433744 2017 -.038205725 1998 .06880125 1999 .0673443155 2000 -.013472095 2001 -.0200707765 2002 -.0315489775 2003 .010068085 2004 -.0244178665 2005 -.107581385 2006 .0317299335 2007 .048569095 2008 .093720825 2009 -.041072615 2010 -.007999225 2011 -.018057025 2012 -.124904835 2013 .052567445 2014 .044034435 2015 -.05109275 2016 .138023815 2017 .10534816 1998 .0071926486 1999 -.0075320526 2000 .0260240146 2001 -.0694235046 2002 -.014116986 2003 -.070487476 2004 -.049498496 2005 -.042393356 2006 -.0127726476 2007 .35886176 2008 .271949626 2009 -.0057090386 2010 -.081182046 2011 -.089218176 2012 -.18649966 2013 .16999126 2014 .161555166 2015 .063169816 2016 -.07120476 2017 .0086255036 2018 -.05202127 1998 .046282797 1999 -.024832867 2000 -.141791367 2001 -.0196447357 2002 -.0141653827 2003 .022898527 2004 -.16336887 2005 -.118813197 2006 -.14477927 2007 -.097220067 2008 -.140022597 2009 .063716367 2010 -.0169730997 2011 .07606687 2012 .35886177 2013 -.22038097 2014 -.0699323347 2015 -.31094185end