| 1 - | Data are as of January 2008. The total includes deputy prime ministers and ministers. Prime ministers were also included when they held ministerial portfolios. Vice-presidents and heads of governmental or public agencies are not included. |
| .. | Data not available |
| (.) | Greater (or less) than zero but small enough to be rounded off to zero at the displayed number of decimal points |
| < | Less than |
| - | Not applicable |
| T | Total |