Why do you compare price indexes from year to year?

Comparing price indexes from year to year allows analysts to assess inflation or deflation trends, providing insight into the cost of living and purchasing power over time. This comparison helps governments, businesses, and consumers make informed economic decisions, such as adjusting budgets, setting wages, or planning investments. Additionally, it aids in evaluating the effectiveness of monetary and fiscal policies. Overall, year-to-year comparisons are essential for understanding economic health and stability.