In 2006 Russia had exported nuclear reactors to Armenia, Bulgaria, Czech Republic, Finland, Hungary, India, Iran, Lithuania, Slovak Republic and Ukraine. In Russia, the average construction time was in 1) 1965-1976 57 months and 2) 1977-1993 72–89 months, but the four plants that have been completed since then have taken around 180 months (15 years), due to increased opposition following the Chernobyl accident and the political changes after 1992.