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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1966 | 3 |
| 1967 | 3 |
| 1969 | 3 |
| 1970 | 4 |
| 1971 | 3 |
| 1972 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 3 |
| 1976 | 2 |
| 1977 | 4 |
| 1978 | 7 |
| 1979 | 7 |
| 1980 | 40 |
| 1981 | 100 |
| 1982 | 81 |
| 1983 | 99 |
| 1984 | 108 |
| 1985 | 122 |
| 1986 | 175 |
| 1987 | 200 |
| 1988 | 219 |
| 1989 | 237 |
| 1990 | 269 |
| 1991 | 285 |
| 1992 | 344 |
| 1993 | 324 |
| 1994 | 336 |
| 1995 | 413 |
| 1996 | 383 |
| 1997 | 462 |
| 1998 | 542 |
| 1999 | 666 |
| 2000 | 765 |
| 2001 | 919 |
| 2002 | 1117 |
| 2003 | 1300 |
| 2004 | 1538 |
| 2005 | 2008 |
| 2006 | 2362 |
| 2007 | 3111 |
| 2008 | 4408 |
| 2009 | 4824 |
| 2010 | 5547 |
| 2011 | 5986 |
| 2012 | 6199 |
| 2013 | 6413 |
| 2014 | 6301 |
| 2015 | 6287 |
| 2016 | 6231 |
| 2017 | 6098 |
| 2018 | 6048 |
| 2019 | 6191 |
| 2020 | 6710 |
| 2021 | 7124 |
| 2022 | 6554 |
| 2023 | 6595 |
| 2024 | 5511 |
| 2025 | 1968 |