Answer :

The index value of 100.8 in 1990 refers to a specific index or indicator that measures a certain variable or phenomenon. Without further information about the specific index being referred to, it is challenging to provide a definitive explanation. However, generally speaking, index values are used to compare data across different time periods and provide a standardized measurement of change.

In this case, the value of 100.8 suggests that there has been an increase or change in the variable being measured compared to a base period or reference point.

An index value of 100 typically represents the base period or the initial reference point. Any value above 100 indicates an increase or growth, while a value below 100 indicates a decrease or contraction.

To fully understand the significance of the index value of 100.8, additional context is required, such as the specific index being used and the range of possible values for that index.

It could be an economic index measuring inflation, a stock market index, or any other indicator that quantifies a particular aspect of the economy, market, or other domain.

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