Beginning with 2001, the festival was held on an annual basis.

Most of these events are held on an annual basis.

This has been held on an irregular basis since 1956.

He has held the position on a part-time basis for the past few months.

From 1956 until 1987, these sessions were held on a regional basis.

This event is held on a yearly basis with $10,000 given away each time.

He has held the post on a temporary basis for the past eight days.

Student of the Month assembly is held on a monthly basis.

These types of elections are held on a less regular basis.

It is held on an annual basis and has been for the past 18 years.