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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1964 | 1 |
| 1966 | 1 |
| 1971 | 1 |
| 1975 | 1 |
| 1977 | 1 |
| 1978 | 5 |
| 1979 | 20 |
| 1980 | 65 |
| 1981 | 61 |
| 1982 | 58 |
| 1983 | 92 |
| 1984 | 86 |
| 1985 | 79 |
| 1986 | 77 |
| 1987 | 76 |
| 1988 | 100 |
| 1989 | 70 |
| 1990 | 135 |
| 1991 | 264 |
| 1992 | 293 |
| 1993 | 282 |
| 1994 | 286 |
| 1995 | 269 |
| 1996 | 311 |
| 1997 | 294 |
| 1998 | 324 |
| 1999 | 374 |
| 2000 | 363 |
| 2001 | 331 |
| 2002 | 375 |
| 2003 | 398 |
| 2004 | 373 |
| 2005 | 370 |
| 2006 | 378 |
| 2007 | 376 |
| 2008 | 372 |
| 2009 | 349 |
| 2010 | 419 |
| 2011 | 398 |
| 2012 | 424 |
| 2013 | 432 |
| 2014 | 458 |
| 2015 | 482 |
| 2016 | 364 |
| 2017 | 334 |
| 2018 | 312 |
| 2019 | 320 |
| 2020 | 300 |
| 2021 | 218 |
| 2022 | 131 |
| 2023 | 128 |
| 2024 | 225 |
| 2025 | 117 |