Symbols
| – | nil |
| 0 | less than half of the unit used |
| • | category not applicable |
| ... | not avalable or result not statistically significant |
| * | relative standard error over 20% |
| , | decimal seperator |
| . | thousands separator |
|
Horizontal and vertical lines across time series indicate a marked break in the series. | |
| Figures may not add up because of rounding. | |