Things were getting progressively worse.
The working expenses were reduced in a progressively larger ratio, e.g.
Our European front has been growing progressively weaker the past hundred years.
In Hungary and Russia a zone-tariff system is in operation, whereby the charge per mile decreases progressively with the length of the journey, the traveller paying according to the number of zones he has passed through and not simply according to the distance traversed.
Hence there occurs a cumulative effect, progressively increasing from the opening till the closing hours.
