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MEDLINE® Citation Counts by Year of Publication
Printer-friendly Version| Years of publication | Total # Citations | # Citations Published in US | % Citations Published in US |
|---|---|---|---|
| 2007* | 563,815 | 266,934 | 47% |
| 2006 | 674,076 | 299,957 | 44% |
| 2005 | 639,999 | 289,530 | 45% |
| 2004 | 591,021 | 271,928 | 46% |
| 2003 | 555,417 | 260,206 | 47% |
| 2002 | 525,102 | 246,111 | 47% |
| 2001 | 505,137 | 238,173 | 47% |
| 2000 | 486,232 | 229,673 | 47% |
| 1999 | 457,396 | 216,981 | 47% |
| 1998 | 446,597 | 211,396 | 47% |
| 1997 | 431,534 | 205,462 | 48% |
| 1996 | 421,818 | 200,063 | 47% |
| 1995 | 416,426 | 198,005 | 48% |
| 1994 | 407,252 | 191,675 | 47% |
| 1993 | 397,982 | 184,937 | 46% |
| 1992 | 391,674 | 179,292 | 46% |
| 1991 | 388,812 | 173,926 | 45% |
| 1990 | 388,150 | 169,353 | 44% |
| 1989 | 381,420 | 162,344 | 43% |
| 1988 | 365,647 | 155,193 | 42% |
| 1987 | 348,002 | 146,116 | 42% |
| 1986 | 330,453 | 138,697 | 42% |
| 1985 | 318,089 | 131,696 | 41% |
| 1984 | 307,911 | 127,284 | 41% |
| 1983 | 299,016 | 122,804 | 41% |
| 1982 | 285,259 | 116,178 | 41% |
| 1981 | 274,371 | 109,691 | 40% |
| 1980 | 272,422 | 107,565 | 39% |
| 1979 | 274,226 | 106,877 | 39% |
| 1978 | 265,479 | 101,023 | 38% |
| 1977 | 255,781 | 95,894 | 37% |
| 1976 | 249,278 | 91,632 | 37% |
| 1975 | 244,330 | 87,294 | 36% |
| 1974 | 230,221 | 80,873 | 35% |
| 1973 | 226,499 | 77,487 | 34% |
| 1972 | 222,538 | 72,798 | 33% |
| 1971 | 217,939 | 70,050 | 32% |
| 1970 | 212,739 | 67,143 | 32% |
| 1969 | 210,988 | 66,963 | 32% |
| 1968 | 203,984 | 63,775 | 31% |
| 1967 | 186,910 | 58,501 | 31% |
| 1966 | 175,039 | 55,488 | 32% |
| 1965** | 164,786 | 50,353 | 31% |
| 1964** | 141,408 | 42,451 | 30% |
| 1963** | 129,928 | NA | NA |
| 1962** | 105,823 | NA | NA |
| 1961** | 92,957 | NA | NA |
| 1960** | 87,253 | NA | NA |
| 1959** | 79,526 | NA | NA |
| 1958** | 71,202 | NA | NA |
| 1957** | 73,891 | NA | NA |
| 1956** | 69,248 | NA | NA |
| 1955** | 68,682 | NA | NA |
| 1954** | 67,558 | NA | NA |
| 1953** | 72,674 | NA | NA |
| 1952** | 76,020 | NA | NA |
| 1951** | 81,659 | NA | NA |
| 1950** | 71,586 | NA | NA |
| 1949** | 20,802 | NA | NA |
| Pre-1949** | 2,179 | NA | NA |
| 1964-2007 Subtotals | 15,220,533 | 6,490,977 | 43% |
| Totals*** | 16,391,521 | ——— | ——— |
| *Searches were done in PubMed on February 21, 2008. Publication year 2007 is not yet complete. **As of December 2006, OLDMEDLINE citations that have all of their original subject terms mapped to current MeSH are included in MEDLINE. There are more citations in PubMed with these older publication dates; most are OLDMEDLINE status. ***PubMed includes both the print and electronic publication dates in a publication date search, therefore citations may be counted under more than one year. The totals do not include these duplicates. Notes: - Any search repeated on a later day may yield different results (typically higher numbers, as NLM may have processed more completed citations for various reasons, e.g., time lag in receipt, or a new journal for indexing going back to volume 1, or data from back issues such as PubMed Central and other sources). - Counts are limited to the MEDLINE subset [sb] of PubMed and do not include out-of-scope citations. To search PubMed® for MEDLINE excluding OLDMEDLINE citations, add NOT jsubsetom to your search. - Country of publication means the country where the journal was published. These data are available for the OLDMEDLINE subset only for the years 1964-65. |
Last reviewed: 23 April 2008
Last updated: 23 April 2008
First published: 27 May 2003
Metadata| Permanence level: Permanence Not Guaranteed