What do " ○" and "•" mean in "九○年", "ニ○•三パーセント", etc.?


This is from one of the reading comprehensions of _An Integrated Approach to
Intermediate Japanese_.

> 九○年にはニ○•三パーセントだったが、ニ○○四年にはニ七•六パーセントだった

What are the ○ and • supposed to mean?? They were used in multiple sentences,
mostly the ones where percentages were mentioned.




These are zeros and decimal points.

"In 90, it was 20.3 percent; in 2004, it was 27.6 percent."




These are zeros and decimal points.

"In 90, it was 20.3 percent; in 2004, it was 27.6 percent."

