The annual roundup of World Governance Indicators was recently released, and they're of interest not simply because I used them in a paper about African growth last term for econometrics.
They're a somewhat controversial worldwide ranking of countries by six aspects of goverance. I personally think they're the best such indicators out there, and seem thorough and accurate. More importantly, the envelope please...
And the winners for most improved are:
Serbia: Voice & Accountability, Government Effectiveness, and Control of Corruption
Angola: Political Stability
Congo, Dem. Rep.: Regulatory Quality
Rwanda: Rule of Law
Conversely, those who are racing to the bottom:
Thailand: Voice & Accountability
Côte d'Ivoire: Political Stability
Zimbabwe: Government Effectiveness, Regulatory Quality, Rule of Law, and Control of Corruption
I am unsure what's happened in Serbia during 2006 to warrant such improvement, but we're all well acquainted with Zimbabwe.
Update: Serbia ratified a new constitution.