i 1993 , og derefter til en generel stabilisering , med et fald til 108,7 pct . i 1997 ( se figur 2a ) , dvs .
initially the ratio tended to rise continuously , from 90.1% in 1990 to 111.6% in 1993 , to broadly stabilise thereafter , decreasing to 108.7% in 1997 ( see Chart 2a ) , i.e. a decline of 2.9 percentage points since the latest peak in 1996 .