Which constellation is the rarest at present?

According to the viewpoint of probability theory

The number of people in 12 constellation is similar.

But there are exceptions

Because of my parents' Spring Festival holiday.

After 80

Scorpio and Sagittarius may be more in the second half of the year.

forehead

After 90.

Actually, it should be about the same.

There should be more people born in the second half of the year.