Countries make laws. Then times change, or the group in power changes, or previous laws have unintended consequences, so they make new laws to change the previous laws. On and on and on, indefinitely. It's called progress.
Is there a quantitative way of measuring this progress that is meaningful for comparing different nations' governments? Simple metrics like number of bills passed isn't quite useful, because different systems favor different amounts of content per bill. Number of pages of bills passed isn't a bad idea either, except the length of a bill is only loosely correlated with its actual legal content, at least in the US.
Does there exist a standard metric for measuring legislative progress over time, applicable across different nations, different states, even comparing state governments and national governments? Does political science have such a concept?
In response to a very reasonable point about positive vs negative change, I think "progress" may not be as reflective a word as "change" here. I'd include backwards-seeming change, because it still shows the legislative efficacy of the system. The goal is to put a number to one question: for any given government, how efficiently can it pass laws?