Read the following dialog and answer the questions.
 

Noval: Will you go to the national handicraft event tomorrow night, Andika? It is held annually by the government.

Andika: Yes, but don't have a partner to go there. What about you, Noval?

Noval: Actually, I'm still searching for a partner, too.

Andika: What if we go together then? It is going to be fun, isn't it?

Noval: Hmmm, it's a good idea. I will fetch you tomorrow night at 6:30 p.m. So, we stilll have 30 minutes before the event began.

Andika: O.K. I cannot wait to see Dodi's performance in making his amazing handicraft.

Noval: Yeah. His handicraft is so unique and artistic.

Andika: It is going to be a good event. Anyway, I need to go to the library now. See you tomorrow, Noval.

Noval: See you.

How often is this event held?