Final answer:
The nation is undergoing a decrease in the inflation rate.
Step-by-step explanation:
The nation is undergoing a decrease in the inflation rate. Inflation rate refers to the percentage increase in the general price level of goods and services over time. A decrease in inflation rate indicates that prices are rising at a slower pace compared to previous years. In this case, the nation's inflation rate has been progressively decreasing from 8% three years ago, to 5% two years ago, and to 2% last year.