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Summary
| Description | Data is for every five years from 2005 to 2010. Source: for 1930 to 2000 from Union Membership Trends in the United States, Table A-1 Apendix A. Source for 2005 and 2010 numbers (wage and salary workers only) from Bureau of Labor Statistics. Chart was created using Excel. |
| Date | |
| Source | Own work |
| Author | BoogaLouie |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:33, 25 March 2012 | | 752 × 452 (24 KB) | Louis P. Boog |
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