GDP stands for gross domestic product, which is the total value of all final goods and services produced in a year. The United States leads in both total GDP and GDP per capita, which measures output per person. The unemployment rate represents the percentage of the labor force that is unemployed, which lowers GDP, and in North Carolina it is currently 4.0%. Personal income includes salaries, wages, investment income, and government payments to individuals. Productivity is output per unit of input, and improvements in capital resources can boost productivity. Components of GDP include consumer spending, business spending, government spending, and net exports.