Personnel costs and personnel cost ration. During the reporting period, the personnel cost ratio could be maintained throughout the Group at 23.2 percent. Personnel costs and personnel cost ration for the Deutsche Telekom Group worldwide. Personnel costs in the Group of which: Germany Special factors* Personnel costs in the Group adjusted for special factors Net revenue* of which: Germany Adjusted personnel cost ratio, Group (in %) Adjusted personnel cost ratio, Germany (in %) 2008 in bil. € 14,1 9,8 1,1 13,0 61,7 29,7 21,2 29,9 2009 in bil. € 14,3 9,0 0,5 13,8 64,6 28,4 521,4 30,1 2010 in bil. € 15,1 9,2 1,0 14,1 62,4 28,1 22,5 30,4 2011 in bil. € 14,7 9,2 1,2 13,6 58,7 27,2 23,2 30,6 (-0.2). *Special factors in billion €, calculated and rounded on the basis of millions for the purpose of precision. Expenses for staff-related measures (early retirement arrangements, severance and voluntary redundancy payments, compensation payments, etc.) primarily in the Germany ( -0.6), Europe (-0.1) and T-Mobile USA (-0.1) operating segments, as well as at Group Headquarters & Shared Services 2010: Expenses for staff-related measures (early retirement arrangements, severance and voluntary redundancy payments, compensation payments, etc.) primarily in the Germany (0.4), Europe (0.2) and Systems Solutions (- 0.1) operating segments, as well as at Group Headquarters & Shared Services 2009: Expenses for staff-related measures (early retirement arrangements, severance and voluntary redundancy payments, compensation payments, etc.) primarily in the Germany (- 0.3) and Systems Solutions (- 0.1) operating segments, as well as at Group Headquarters & Shared Services 2008: Expenses for staff-related measures (early retirement arrangements, severance and voluntary redundancy payments, compensation payments, etc.) primarily in the Germany (- 0.8) and Systems Solutions (- 0.3) operating segments. (- 0.1). (- 0.1). Revenue per employee. In view of increased performance pressure at the international level, Group-wide revenue per employee decreased slightly during the reporting period. In comparison, we were able to keep the generated revenue per full-time equivalent (FTE) constant at Deutsche Telekom in Germany at a level of €221,000. Revenue per employee.