be at one's peak

At the peak of his career, he was making $1500 a week.

He was then at the very peak of his career.

In 1935 he was at the peak of his success.

At the 1997 peak they held more than 90% of the market.

Today I think we are at the peak of what we'll see for years.

He died in 1928 at the peak of his career.

Such forces could not long hold up an American army at the peak of its power.

On the one hand, the west is at a peak of power.

At its peak, the town had a population of over 850 people.

At its peak, they had a staff of eight people.