In December 2005, fuel in Slovenia averaged €0.919 for petrol

Petrol, monthly average€0.919/L
Diesel, monthly average€0.924/L
LPG, monthly average€0.552/L
Weekly bulletins held for December 20053

Monthly averages for Slovenia across December 2005, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).