Accuracy over time

Continuing accuracy is not promised. For anything that turns on a current figure or rule, go to the primary source.

Where outbound links go

External links point to services outside this site. Those destinations are controlled by their own operators and use their own terms.

Availability

Expect the site to change. What is published, where it lives, and whether it is reachable may all change, and no specific result is promised.

Raising a question

[email protected] is the address for questions about these terms.