Skip Navigation Bar
NLM logo

Yearly Citation Totals from 2015 MEDLINE/PubMed Baseline: 23,343,329 Citations Found

Year Number of Citations
1809 22
1811 33
1812 24
1813 27
1814 29
1815 29
1816 43
1817 25
1818 33
1819 31
1821 35
1823 51
1827 46
1828 14
1829 14
1831 21
1832 17
1833 13
1835 21
1837 18
1838 25
1839 24
1840 146
1841 526
1842 662
1843 564
1844 339
1845 280
1846 279
1847 241
1848 245
1849 211
1850 215
1851 233
1852 237
1853 230
1854 140
1855 178
1856 249
1857 257
1858 235
1859 223
1860 169
1861 202
1862 191
1863 169
1864 159
1865 134
1866 144
1867 366
1868 513
1869 423
1870 428
1871 489
1872 494
1873 568
1874 457
1875 459
1876 451
1877 395
1878 510
1879 504
1880 819
1881 945
1882 506
1883 1166
1884 1345
1885 1466
1886 1497
1887 1418
1888 1201
1889 1538
1890 1041
1891 924
1892 1396
1893 1642
1894 1162
1895 1526
1896 1794
1897 1830
1898 1814
1899 1475
1900 1454
1901 1660
1902 1725
1903 1945
1904 1899
1905 2115
1906 2069
1907 2058
1908 2694
1909 2956
1910 3014
1911 3333
1912 3312
1913 3535
1914 3531
1915 3325
1916 3134
1917 2890
1918 2856
1919 3089
1920 3297
1921 3329
1922 3472
1923 3761
1924 4160
1925 4393
1926 4693
1927 5294
1928 4922
1929 5010
1930 4904
1931 4828
1932 5013
1933 5020
1934 4988
1935 5090
1936 4824
1937 4797
1938 5249
1939 5046
1940 4520
1941 4331
1942 4259
1943 4184
1944 4374
1945 20190
1946 53781
1947 64743
1948 70460
1949 62508
1950 85563
1951 103640
1952 107944
1953 108660
1954 105619
1955 108435
1956 106937
1957 111396
1958 109386
1959 109895
1960 112089
1961 120019
1962 125538
1963 141265
1964 161852
1965 176539
1966 179586
1967 191639
1968 207513
1969 214498
1970 218438
1971 222374
1972 226599
1973 230496
1974 234440
1975 248184
1976 254159
1977 261056
1978 271474
1979 280688
1980 279313
1981 282048
1982 294167
1983 308110
1984 317130
1985 327072
1986 340393
1987 357936
1988 375483
1989 391239
1990 398767
1991 399805
1992 404237
1993 410136
1994 420918
1995 430825
1996 435825
1997 446242
1998 460052
1999 473942
2000 500313
2001 531107
2002 551709
2003 579067
2004 614717
2005 651051
2006 679022
2007 703348
2008 740869
2009 771039
2010 805215
2011 851694
2012 907765
2013 921454
2014 367298
2015 51

Last Reviewed: November 30, 2015