Barro, Robert J.; McCleary, Rachel M. - National Bureau of Economic Research (NBER) - 2004
For 188 independent countries in 2000, 72 had no state religion in the years 2000, 1970, and 1900; 58 had a state religion at all three dates; and 58 had some kind of transition. Among the 58 transitional countries, 12 had two transitions, 4 of which (former Soviet Republics in Asia) involved two...