CREATE TABLE table_67911 ("Exam" TEXT, "2006 First Time" TEXT, "2006 All" TEXT, "2007 First Time" TEXT, "2007 All" TEXT, "2008 First Time" TEXT, "2008 All" TEXT, "2009 First Time" TEXT, "2009 All" TEXT, "2010 First Time" TEXT, "2011 First Time" TEXT, "2012 First Time" TEXT)

What is the 2009 first time percentage of the mg general science 5-9 exam with a 2008 first time percentage of 54%?
SELECT "2009 First Time" FROM table_67911 WHERE "2008 First Time" = '54%' AND "Exam" = 'mg general science 5-9'
SELECT "2009 First Time" FROM "table_67911" WHERE "2008 First Time" = '54%' AND "Exam" = 'mg general science 5-9'