17.8 17.0 18.0 15.8 16,4 17.6 15.1 7.4 12.2 16.4 18.4 10.7 15.0 14.0 13.4 12.9 14 , 9 , 14.5 12,2 14.0 10,3 IVO 10.0 12,2 NO.