The General Social Survey (GSS) "takes the pulse of America" on a vast number of topics, with national-level data collected beginning in 1972 to present. A great resource for any discipline!
To identify variables for the entire dataset and/or specific years:
Options for Analyzing GSS Data:
Use SDA to analyze data online analysis with no need for downloading or special software:
Download data for analysis in statistical software (e.g., SPSS, SAS, Stata, R):