Investment as percent of GDP in the USA, March, 2018: Data for that indicator for the USA are available from Q1 1960 to Q1 2018. During that period, the average value for the USA was 16.86 percent with a high of 19.98 percent in Q3 1979 and a low of 13.47 percent in Q1 2010. The source of the data for this indicator for the USA is: TheGlobalEconomy.com. Click on the following link to see the values of Investment as percent of GDP around the world.
Definition: Gross fixed capital formation including land improvements; plant, machinery, and equipment purchases; and the construction of roads, railways, and the like, including schools, offices, hospitals, private residential dwellings, and commercial and industrial buildings as percent of GDP