Using the data in the table, what is Walmart's (NYSE: WMT) beta? S&P 500 WMT 2000 -9% -23% 2001 -12% 9% 2002 -22% -12% 2003 28% 6% 2004 11% 0% 2005 5% -10% 2006 16% 0% 2007 5% 5% 2008 -37% 20% 2009 26% -3% 2010 15% 3% 2011 2% 14% 2012 16% 17% 2013 32% 18% 2014 14% 12% 2015 1% -27% 2016 12% 16% 2017 22% 47% 2018 -4% -3% 1.44 0.26 0 0.08 0.84