Note Surveys and censuses marked with an asterisk ( ) were conducted by the National Statistical Institute (INE).

The normal qualifying period for in grade movement between consecutive steps is one year, except at those steps marked with an asterisk for which a two year period at the preceding step is required.

The normal qualifying period for in grade movement between consecutive steps is one year, except at those steps marked with an asterisk, for which a two year period at the preceding step is required.