Wolfram Grätz

Current 12 years and 5 months, since Aug 2011

1 year and 6 months, Jan 2021 - Jun 2022

8 years, Jan 2013 - Dec 2020

6 years and 9 months, Apr 2009 - Dec 2015

1 year and 10 months, Mar 2011 - Dec 2012

3 years and 5 months, Nov 2005 - Mar 2009

5 months, Aug 2007 - Dec 2007

1 year and 5 months, Aug 2006 - Dec 2007

6 months, Feb 2007 - Jul 2007

1 year and 5 months, Jun 2004 - Oct 2005