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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1966 | 13 |
| 1967 | 15 |
| 1968 | 12 |
| 1969 | 2 |
| 1970 | 13 |
| 1971 | 3 |
| 1972 | 5 |
| 1973 | 2 |
| 1974 | 7 |
| 1975 | 11 |
| 1976 | 26 |
| 1977 | 49 |
| 1978 | 94 |
| 1979 | 120 |
| 1980 | 3669 |
| 1981 | 7562 |
| 1982 | 7343 |
| 1983 | 7412 |
| 1984 | 7584 |
| 1985 | 7515 |
| 1986 | 7588 |
| 1987 | 7803 |
| 1988 | 7698 |
| 1989 | 8011 |
| 1990 | 8094 |
| 1991 | 8267 |
| 1992 | 8189 |
| 1993 | 8195 |
| 1994 | 8570 |
| 1995 | 8452 |
| 1996 | 8338 |
| 1997 | 8290 |
| 1998 | 8538 |
| 1999 | 8971 |
| 2000 | 9362 |
| 2001 | 10053 |
| 2002 | 10472 |
| 2003 | 11220 |
| 2004 | 12058 |
| 2005 | 13259 |
| 2006 | 14313 |
| 2007 | 15670 |
| 2008 | 18052 |
| 2009 | 19476 |
| 2010 | 21814 |
| 2011 | 23637 |
| 2012 | 25342 |
| 2013 | 27311 |
| 2014 | 27862 |
| 2015 | 28181 |
| 2016 | 27950 |
| 2017 | 25910 |
| 2018 | 25722 |
| 2019 | 25745 |
| 2020 | 27727 |
| 2021 | 28199 |
| 2022 | 25576 |
| 2023 | 24950 |
| 2024 | 15658 |
| 2025 | 5 |