Earnings on investments last year were $410.6 billion, up from $291.1 billion in 2010, the Commerce Department agency said Thursday in a release.
The bureau said the statistics were from the "2011 Annual Survey of Public Pensions: State-Administered Defined Benefit Data," which examines financial activity and membership information for the nation's 222 state-administered, public-employee retirement systems, including revenues, expenditures, investment holdings, membership and beneficiaries.
Total revenue increased 32.8 percent, from $389.0 billion in 2010 to $516.5 billion in 2011.
Total payments rose 8.5 percent in 2011, from $174.2 billion in 2010 to $189.0 billion the previous year.
Interpol investigating stolen passports on missing flight
Senate Democrats to pull all-nighter on climate change