Records: Most PC Service

In text:

17 Years 9 Months by Russell H.
1984–present (2005)

• E. Timor
  
• Zambia,
  
• E. Caribbean
  
• Tonga
  
• Guatemala
  
• Fiji
  
• Ecuador

15 Years 11 Months by Roger H.
1966 - 1990

• Senegal
  
• Botswana
  
• India
  
• Burkina Faso

11 Years 7 months by Louis C.
1974 - 1998

• E. Caribbean
  
• Lithuania
  
• Fiji
  

Volunteer of Note:

8 Years 8 months by Helen Raffel

1996 - 2005 (roughly)

• Uzbekistan
• Morocco
• China
• Ukraine

Source