The time limits were lowered from 28 weeks to 24 for most cases to reflect alleged improvements in medical technology justifying the lowering.
This change may reflect improvements in manufacturing capability, which must have been at its technical limit at the time.
The gain, he said, reflected "continued improvements in productivity and prices" as well as stronger demand.
The interior, too, retains many features of the original construction as well as elements reflecting improvements undertaken in the 1840s, 1867-68 and 1931.
Behind such signs, economists note, are figures reflecting improvements in farmers' finances.
This involved rebuilding the platform to reflect improvements in broadside ship gunnery.
He speculates that this reflects improvements in the relative quality and reputation of products made elsewhere.
The Audit Commission also noted that resident satisfaction was rising, reflecting improvements in the quality of the environment and services generally.
Although many countries continue to push for economic change, and their companies report big earnings gains, many stock prices do not yet reflect such improvements.
The earnout payment should reflect marginal improvements above this base.