That’s according to figures published by Statec, the national statistics agency, on 5 June.
Most of the upward pressure was caused by the cost of petroleum products, which rose 2.5% over April.
The bureau’s baseline consumer price index increased from 865.60 points in April to 866.85 points in May. The next round of indexation (automatic rises in salaries and pension payments) will take place when that index hits 873.94 points.
Statec will publish its next official inflation figures on 3 July.