In May 2010, fuel in Latvia averaged €1.093 for petrol

Petrol, monthly average€1.093/L
Diesel, monthly average€1.065/L
LPG, monthly average€0.535/L
Weekly bulletins held for May 20105

Monthly averages for Latvia across May 2010, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).