CREATE TABLE table_29328 ("Greek national account" TEXT, "1970" TEXT, "1980" TEXT, "1990" TEXT, "1995" TEXT, "1996" TEXT, "1997" TEXT, "1998" TEXT, "1999" TEXT, "2000" TEXT, "2001 1" TEXT, "2002" TEXT, "2003" TEXT, "2004" TEXT, "2005" TEXT, "2006" TEXT, "2007" TEXT, "2008" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT, "2012" TEXT, "2013 2" TEXT, "2014 2" TEXT, "2015 3" TEXT)

What is 2006 when 1997 is 6.8?
SELECT "2006" FROM table_29328 WHERE "1997" = '6.8'
SELECT "2006" FROM "table_29328" WHERE "1997" = '6.8'