The sales proved extremely popular and became a biannual event.

At first a biannual event, the Festival became yearly in 1997.

The festival has been planned as a biannual event.

The showcase became a biannual event in 2000.

This prodigy is a biannual event, and it shows.

And, it prompted the magazine to make the survey a biannual event.

Womanifesto is a biannual artist-initiated event focusing on the work of women artists from around the world.

From 1993 it was a biannual event until 2000.

Will the festival now become a biannual event?

Plans are currently in the works to make this conference a biannual event.