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   Sociology 441: Stratification 
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| Other possible causes of inequality: | 
| De-industrialization | 
| Foreign Trade | 
| Minimum wage laws | 
| Productivity | 
| Unemployment | 
| Unionization | 
|  | 
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| Income inequality trends: | 
| Overall inequality | 
| Share of bottom quintile | 
| Share of middle quintile | 
| Share of top quintile | 
|  | 
Source: Immigration and Naturalization Service,
http://www.ins.usdoj.gov/graphics/aboutins/statistics/Immigs.htm
 
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| Last updated November 14, 2002 |  
     comments to: Reeve Vanneman.
     reeve@umd.edu   
     
     |