US statistical data revealed today, Thursday, the continued rise of American inflation during last September, as the US consumer price index increased by 0.4% on a monthly basis, while it was expected to grow by 0.2%. The previous reading of the index had recorded a growth of 0.1% during last August.

At the same time, the data showed that core US inflation rose by 0.6% on a monthly basis, higher than market expectations of a 0.4% increase. The previous reading recorded a growth of 0.6% during last August.

The US inflation index measures the change in prices of goods and services offered to consumers on a monthly basis. It also measures the monthly change in consumer prices which indicates US inflation rates.

On an annual basis, the data showed a growth in US inflation of 8.2% by the end of last September, higher than market expectations of only 8.1%. The previous reading of the index had recorded a growth of 8.3% during last August.

The annual US inflation index measures the change in prices of goods and services offered to consumers on an annual basis and is the primary measure of US inflation rates. It is worth noting that inflation means a general rise in the prices of goods and services. The relationship between US inflation and interest rates is an important factor to understand how this index affects markets and investments.