After having reached a peak in 1996 , the ratio declined by 1.3 percentage points to stand at 68.8% in 1997 .
Áöïý êïñõöþèçêå ôï 1996 , ï ëüãïò ìåéþèçêå êáôÜ 1,3 åêáôïóôéáßåò ìïíÜäåò êáé Ýöèáóå ôï 68,8% ôï 1997 .