For those interested this came out recently.
http://data.worldjusticeproject.org/opengov/#
I looked at Uruguay/ USA/ Canada and these are the figures.
Publicized Laws and Government Data.
Global Ranking
UY 28 USA 15 CAN 7
Right to Information
Global Ranking
UY 38 USA 14 CAN 21
Civic Participation
Global Ranking
UY 14 USA 10 CAN 9
Complaint Mechanisms
Global Ranking
UY 19 USA 10 CAN 7
Lots of countries to compare besides these plus more background information on the website.