 However, unofficial estimates put the budget significantly higher, for example the Stockholm International Peace Research Institute (SIPRI) 2013 Military Expenditure Database estimated Russia's military expenditure in 2012 at US$90.749 billion.This estimate is an increase of more than US$18 billion on SIPRI's estimate of the Russian military budget for 2011 (US$71.9 billion)., Russia's military budget is higher than any other European nation.