I wonder whether these accidents are more frequent now than in the past.

But these cases seem to have become less frequent in recent years.

His appearances on the program were less frequent in the last years of the show.

But major failures have been less frequent in the last few years.

These occur throughout the year, though are more frequent in the summer months.

Crime is most frequent in second and third decades of life.

Most were reductions, and they became more frequent in the middle to late 1990's.

For this reason, the traditional use remains the most frequent in France.

Its use is most frequent in the field of consumer products.

Another treatment, which has become more frequent in recent years, is lead glass filling.