Some of them had 1 DNF for example like Eckhart, Freddie etc but still were having 1 result deducted which i interpreted as an 18/18 finish.
Now all drivers with 18 starts are included following this overview sheet Yoeri found in the league archives pages
http://www.racedepartment.com/leagues/history.php?leagueid=10&seasonid=48&menu=season
Now all drivers with 18 starts are included following this overview sheet Yoeri found in the league archives pages
http://www.racedepartment.com/leagues/history.php?leagueid=10&seasonid=48&menu=season