Explanation of symbols
Observed development*
Increase
Decrease
No significant change
Not applicable (1 record only)
Assessment
Positive (moving towards sustainability)
Negative (moving away from sustainability)
Unchanged - in terms of sustainable development the result is neutral
Not applicable
* The development is analysed since 1992 (United Nations Earth Conference on Environment and Development in Rio de Janeiro) or since the first survey (if after 1992).
Last updated: 30.01.2012