There are a great many Germans that wear hats. There is no exact percentage or number as people change their preferences.
People who want to keep the sun out of their eyes wear hats. People who want the keep their head warm wear hats. People who just want to look cool also wear hats.
They wear normal clothes but some people wear Santa hats Santa clothes or elf's hats
People,soldiers,workers,cowboy.etc wear hats.
They wear it
It would be illogical to assume every person in the entire world wore hats during the 1920's. A lot of people did probably wear hats during this time period, but there are always black sheep.
people are not allowed to wear hats inside the church
Some people
Many Australians wear hats in the outdoors, and this has increased over the last decade as awareness of skin cancer increases. School children are required to wear hats outside.
they can. but not many of them do.
People
People wear clothes, hats, and sunscreen to block the sun.