* indicates monthly or quarterly data series
Investment as percent of GDP in the USA, December, 2018: For that indicator, TheGlobalEconomy.com provides data for the USA from Q1 1960 to Q4 2018. The average value for the USA during that period was 16.89 percent with a minumum of 13.47 percent in Q1 2010 and a maximum of 19.98 percent in Q3 1979. 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