CPI

Consumer price index

A patron fee index is a fee index

the fee of a weighted common marketplace basket of patron items

offerings bought with the aid of using households

CPI_t=\frac{C_t}{C_0} * 100

CPI_t = patron fee index in modern duration 

C_t = fee of marketplace basket in modern duration 

C_0 = fee of marketplace basket in base duration 

Consumer price index