As a federal agency, the National Aeronautics and Space Administration (NASA) receives its funding from the annual federal budget passed by the United States Congress. The following charts detail the amount of federal funding allotted to NASA each year over its history to pursue programs in aeronautics research, robotic spaceflight, technology development, and human space exploration programs. Annual budget NASA's budget for financial year (FY) 2020 is $22.6 billion. It represents 0.48% of the $4.7 trillion the United States plans to spend in the fiscal year. Since its inception, the United States has spent nearly US$650 billion (in nominal dollars) on NASA. Notes for table: Sources for a part of these data: U.S. Office of Management and Budget (OMB) (needs proper citation-link, numbers here differ from NASA Pocket Statistics),Air Force Association's Air Force Magazine 2007 Space Almanac Secondary references: Cost of Apollo program NASA's budget peaked in 1964–66 when it consumed roughly 4% of all federal spending. The agency was building up to the first Moon landing and the Apollo program was a top national priority, consuming more than half of NASA's budget and driving NASA's workforce to more than 34,000 employees and 375,000 contractors from industry and academia. In 1973, NASA submitted congressional testimony reporting the total cost of Project Apollo as $25.4 billion (about $ in dollars). Economic impact of NASA funding A November 1971 study of NASA released by MRIGlobal (formerly Midwest Research Institute) of Kansas City, Missouri concluded that "the $25 billion in 1958 dollars spent on civilian space R & D during the 1958–1969 period has returned $52 billion through 1971 – and will continue to produce payoffs through 1987, at which time the total pay-off will have been $181 billion. The discounted rate of return for this investment will have been 33 percent." Other statistics on NASA's economic impact may be found in the 1976 Chase Econometrics Associates, Inc. reports and backed by the 1989 Chapman Research report, which examined 259 non-space applications of NASA technology during an eight-year period (1976–1984) and found more than: $21.6 billion in sales and benefits 352,000 (mostly skilled) jobs created or saved $355 million in federal corporate income taxes According to a 1992 Nature commentary, these 259 applications represent ". . .only 1% of an estimated 25,000 to 30,000 Space program spin-offs." A 2013 report prepared by the Tauri Group for NASA showed that NASA invested nearly $5