IHS Markit Connect (formerly IHS Global Insight Historical Data) 
Extensive worldwide economic time series. Frequency of data varies. 
Years of Coverage:  Varies     
Access Mode : GALILEO (search now)
OR WRDS (A database on Wharton Research Data Services) Use restricted to UGA faculty, PhD & Masters students with a WRDS account. Apply for an account at http://wrds.wharton.upenn.edu/

OECD iLibrary
Economic indicators, national accounts statistics, and economic surveys for OECD countries. 
Years of Coverage:  Publications 1998- / earliest statistics 1960  Search this in GALILEO

ProQuest Statistical 
Indexes statistical publications of intergovernmental organizations. 
Years of Coverage: 1983- Search this in GALILEO