Worldwatch Global Trends Worldwatch Institute CD-ROM with historical data going as far back as 1955 on world electrical generating capacity of nuclear power plants, world nuclear power reactor construction starts, nuclear capacity of decommissioned plants, and global stocks of plutonium and highly-enriched uranium. DSS Study Number 5108. Updated by Vital Signs (Worldwatch Institute publication in cooperation with the United Nations Environment Programme). GE150.W675 (Current Volume in Trustees Reading Room) Coverage varies by year. Check the index.
World Development Indicators
In addition to supplying economic and social data includes environmental data including electricity production from nuclear as well as alternative & nuclear energy as a percentage of use. Data as early as 1960.
World Resources Institute (environmental think tank)
The World Resources Institute's mission is "to move human society to live in ways that protect Earth's environment and its capacity to provide for the needs and aspirations of current and future generations". Includes datasets on energy and resources including electricity. Some of the statistics on nuclear production can also be found in Data-Planet Statistical Datasets.