FIGURE 4.9 Papers published in journals on the FFAR list (National Research Council, Federal Funding of Astronomical Research, National Academy Press, Washington, D.C., 2000), 1981 to 2009. Top: Papers in specific disciplines as a fraction of all papers published. Bottom: Absolute number of papers published per year. Disciplines were assigned by Bayesian classification on the basis of title, abstract, and keyword text extracted from the Astrophysical Data System. The reported fractions are annual averages.