GDP data: C + I + G + X - M

Gross domestic product is the total value of final goods and services produces in the economy in a given time period (usually a year).

Gross Domestic Product = Consumption + Investment + Government Purchases + Exports - Imports

GDP = C + I + G + X - M

The Economic Report of the President provides U.S GDP data since 1959.

Table B-1 (Gross domestic product) provides nominal GDP data. They are not adjusted for inflation.
Table B-2 (Real gross domestic product) provides GDP data adjusted for inflation.

In both tables, consumption (C) and investment (I) data appear on the first page of the Excel spreadsheet. The data for government purchases (G), exports (X), and imports (M) are provided on page 2 of each spreadsheet.