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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 3 |
| 1949 | 1 |
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 1 |
| 1956 | 1 |
| 1957 | 2 |
| 1959 | 2 |
| 1960 | 2 |
| 1961 | 3 |
| 1962 | 9 |
| 1963 | 4 |
| 1964 | 17 |
| 1965 | 2 |
| 1966 | 1 |
| 1967 | 1 |
| 1971 | 6 |
| 1972 | 47 |
| 1973 | 180 |
| 1974 | 265 |
| 1975 | 210 |
| 1976 | 301 |
| 1977 | 469 |
| 1978 | 449 |
| 1979 | 472 |
| 1980 | 367 |
| 1981 | 334 |
| 1982 | 368 |
| 1983 | 338 |
| 1984 | 405 |
| 1985 | 410 |
| 1986 | 389 |
| 1987 | 425 |
| 1988 | 525 |
| 1989 | 816 |
| 1990 | 632 |
| 1991 | 737 |
| 1992 | 798 |
| 1993 | 849 |
| 1994 | 921 |
| 1995 | 1029 |
| 1996 | 1096 |
| 1997 | 1231 |
| 1998 | 1375 |
| 1999 | 1187 |
| 2000 | 1363 |
| 2001 | 1522 |
| 2002 | 1512 |
| 2003 | 1623 |
| 2004 | 1701 |
| 2005 | 1683 |
| 2006 | 1714 |
| 2007 | 1638 |
| 2008 | 1640 |
| 2009 | 1673 |
| 2010 | 1683 |
| 2011 | 1625 |
| 2012 | 1621 |
| 2013 | 1514 |
| 2014 | 1485 |
| 2015 | 1475 |
| 2016 | 1389 |
| 2017 | 1308 |
| 2018 | 1178 |
| 2019 | 1204 |
| 2020 | 1215 |
| 2021 | 1117 |
| 2022 | 852 |
| 2023 | 763 |
| 2024 | 692 |