over time vs by the time of progress

Some examples from the web:

• New styles were developed over time.
• The materials used to produce cartonnage changed over time.
• Our practices leave grooves over time.
• The heel becomes slender over time.
• Stability requires that fingerprints remain the same over time.
• Infection induces incomplete natural immunity that wanes over time.
• Suicide rates differ significantly between countries and over time.
• Shen theorized that geographical climates gradually shifted over time.
• Finishes which are characterized by their chemical-physical resistance and repeatability over time.
• The EverFlex construction guarantees great flexibility and consistent performance over time.
• The Syrian power grew stronger over time.
• This indicates that clinical benefit may diminish over time.
• Their severity and frequency diminished over time.
• The frequency of infusion-related reactions decreased over time with continued treatment.
• Pharmacokinetics were dose proportional and did not change over time.
• Prospective studies track cohorts over time.
• The tissue should demonstrate reproductivity over time and preferably between laboratories.
• This is important as conversion rates vary over time.
• Statistically, property prices tend to increase over time.
• These clauses were renewed over time.

Some examples from the web:

• We hope there will have been progress on this point by the time of the second reading.
• The Buenos Aires Action Plan promises some progress by the time of COP VI in the year 2000.
• Only in that way will we be able to meet the challenge of the times while at the same time making progress in research.
• It is still too early to speculate on what concrete progress we should expect by then but it is always clear, as the honourable gentleman said earlier, that by the time of the summit, negotiations must have established a critical mass.
• Masivet might extend the time before the tumours progress.
• She lets her personal politics get in the way of progress every time.
• Trust in the euro and European monetary union depends on the time and progress of this decision.
• People ask me all the time about the progress we've made treating mental illness in this country...
• Any progress on time of death?
• I am committed to advances in the area of shark conservation and other aspects of marine biodiversity, and will inform you in due time of the progress made.
• The European Union must persist in its denouncement of the Burmese government's behaviour, until such time as signs of progress in the direction of democracy finally begin to appear.
• Now is the time to make progress towards our aspirations and to determine our reform strategy.
• Countries must have implemented the existing acquis communautaire by the time of accession.
• This procedure has also been applied to Greece by the time of its accession.
• We expect practical results to be achieved by the time of the European Council.
• Because by the time of my first full moon, he was dead.
• By the time of the American Revolution the treasure had been hidden again.
• By the time of the disaster every field of human activity had been in a state of grave crisis.
• At least we know that by the time of the murder, Ratchett was too drugged to cry out or defend himself with this.
• Countries joining the EU must have implemented the existing acquis communautaire by the time of accession.