Question

what sort of change is observed over the 25 years span ? has the gdp increase or decrease​

Answer 1

yes gdp increase is noted in increase of 27% in last 25 years

Answer 2

The Gross Domestic Product (GDP) of an economy is a measure of total production. More precisely, it is the monetary value of all goods and services produced within a country or region in a specific time period. While the definition of GDP is straightforward, accurately measuring it is a surprisingly difficult undertaking. And attempts to make comparisons over time and across borders are complicated by price, quality and currency differences. This article covers the basics of GDP data and highlights many of the pitfalls associated with intertemporal and spatial comparisons.