A country's economic development can be measured by a variety of indicators, such as GDP (gross domestic product), GNP (gross national product), CPI (commodity price index), inflation rate, per capita GDP, per capita energy consumption, rural population ratio, life expectancy, neonatal mortality rate, literacy rate and so on. Different organizations have also developed indicators to measure various institutional environments. GDP (gross domestic product), GNP (gross national product), CPI (commodity price index), inflation rate and other indicators to measure the level of economic development, among which GDP is the most widely used thing!