Inflation in Spain slowed down by more than originally estimated in April mainly due to a decline in prices of lubricants, electricity and fuels, a report released by the statistical office Ine unveiled on Monday. The report showed that the harmonized index of consumer prices (HICP) jumped 1.5% on an annual basis in April after it grew 2.6% in March, while the consumer price index climbed 1.4% in April.