[{"Year":1913,"PR Citations":1},{"Year":1923,"PR Citations":2},{"Year":1928,"PR Citations":1},{"Year":1929,"PR Citations":1},{"Year":1931,"PR Citations":2},{"Year":1932,"PR Citations":1},{"Year":1933,"PR Citations":1},{"Year":1934,"PR Citations":4},{"Year":1935,"PR Citations":3},{"Year":1936,"PR Citations":1},{"Year":1937,"PR Citations":1},{"Year":1938,"PR Citations":1},{"Year":1939,"PR Citations":2},{"Year":1940,"PR Citations":2},{"Year":1941,"PR Citations":6},{"Year":1946,"PR Citations":3},{"Year":1947,"PR Citations":6},{"Year":1948,"PR Citations":16},{"Year":1949,"PR Citations":30},{"Year":1950,"PR Citations":46},{"Year":1951,"PR Citations":64},{"Year":1952,"PR Citations":63},{"Year":1953,"PR Citations":71},{"Year":1954,"PR Citations":75},{"Year":1955,"PR Citations":110},{"Year":1956,"PR Citations":110},{"Year":1957,"PR Citations":176},{"Year":1958,"PR Citations":195},{"Year":1959,"PR Citations":222},{"Year":1960,"PR Citations":198},{"Year":1961,"PR Citations":257},{"Year":1962,"PR Citations":260},{"Year":1963,"PR Citations":265},{"Year":1964,"PR Citations":269},{"Year":1965,"PR Citations":284},{"Year":1966,"PR Citations":317},{"Year":1967,"PR Citations":360},{"Year":1968,"PR Citations":376},{"Year":1969,"PR Citations":393},{"Year":1970,"PR Citations":461},{"Year":1971,"PR Citations":549},{"Year":1972,"PR Citations":689},{"Year":1973,"PR Citations":666},{"Year":1974,"PR Citations":786},{"Year":1975,"PR Citations":840},{"Year":1976,"PR Citations":932},{"Year":1977,"PR Citations":1068},{"Year":1978,"PR Citations":1218},{"Year":1979,"PR Citations":1290},{"Year":1980,"PR Citations":1471},{"Year":1981,"PR Citations":1506},{"Year":1982,"PR Citations":1559},{"Year":1983,"PR Citations":1709},{"Year":1984,"PR Citations":1682},{"Year":1985,"PR Citations":1962},{"Year":1986,"PR Citations":2070},{"Year":1987,"PR Citations":2188},{"Year":1988,"PR Citations":2074},{"Year":1989,"PR Citations":2503},{"Year":1990,"PR Citations":2819},{"Year":1991,"PR Citations":3290},{"Year":1992,"PR Citations":3642},{"Year":1993,"PR Citations":3764},{"Year":1994,"PR Citations":4169},{"Year":1995,"PR Citations":4409},{"Year":1996,"PR Citations":4826},{"Year":1997,"PR Citations":5155},{"Year":1998,"PR Citations":5392},{"Year":1999,"PR Citations":6152},{"Year":2000,"PR Citations":7490},{"Year":2001,"PR Citations":7611},{"Year":2002,"PR Citations":8395},{"Year":2003,"PR Citations":9521},{"Year":2004,"PR Citations":10487},{"Year":2005,"PR Citations":11786},{"Year":2006,"PR Citations":12199},{"Year":2007,"PR Citations":12483},{"Year":2008,"PR Citations":13054},{"Year":2009,"PR Citations":12786},{"Year":2010,"PR Citations":12426},{"Year":2011,"PR Citations":12536},{"Year":2012,"PR Citations":14268},{"Year":2013,"PR Citations":12839},{"Year":2014,"PR Citations":12776},{"Year":2015,"PR Citations":11795},{"Year":2016,"PR Citations":10843},{"Year":2017,"PR Citations":10542},{"Year":2018,"PR Citations":10039},{"Year":2019,"PR Citations":10002},{"Year":2020,"PR Citations":9710},{"Year":2021,"PR Citations":10178},{"Year":2022,"PR Citations":9297},{"Year":2023,"PR Citations":7788},{"Year":2024,"PR Citations":7140},{"Year":2025,"PR Citations":4670},{"Year":2026,"PR Citations":5}]