Table 2.

Characteristics of the regions* (n = 439) according to the Federal Office of Building and Regional Planning (BBR), 2004

Variable	Mean	SD
Unemployment quota in % (SD)	12.2	5.8
Employment quota in % (SD)	46.9	15.7
Monthly net income of private households per inhabitant in € (SD)	1,401	183.7
Gross domestic product per inhabitant in € (SD)	24,757	9,834
Tax revenue per inhabitant in € (SD)	446	169
Proportion of foreigners in % (SD)	6.9	4.7
Physicians per 100,000 inhabitants (SD)	153.3	52.9

Notes: SD, standard deviation. * All regional data refer to the level of the 439 German counties ("Kreise & kreisfreie Städte").