What's the pass rate of civil servants' exams?

Asking this question means that you have not been exposed to the civil service examination. The civil service examination is divided into national, provincial, local and category levels, and the positions and the number of applicants are also very different. As far as I know, in 2008, the average proportion of the civil service examination directly under the State was 78: 1, and the highest proportion was 7800: 1, with a low pass rate. Of course, the main reason is that people think that the exams directly under the state should be relatively fair, so there should be more people.