[Toddsterpatriot]

Labor Research Association is a New York City-based non-profit research and advocacy organization that provides research and educational services for trade unions.

Couldn't find any info from CPUSA? Do you have real data, direct from the BLS? Or has all your info been touched by left wing union types?

[Leonine]

http://www.bls.gov/opub/mlr/2005/05/art1full.pdf
Chart 4 contains the same data expanded over quarters, but it is limited to 1980-2003.