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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 2 |
| 1970 | 8 |
| 1971 | 22 |
| 1972 | 14 |
| 1973 | 27 |
| 1974 | 46 |
| 1975 | 46 |
| 1976 | 69 |
| 1977 | 92 |
| 1978 | 116 |
| 1979 | 120 |
| 1980 | 118 |
| 1981 | 120 |
| 1982 | 169 |
| 1983 | 151 |
| 1984 | 134 |
| 1985 | 164 |
| 1986 | 156 |
| 1987 | 158 |
| 1988 | 160 |
| 1989 | 223 |
| 1990 | 272 |
| 1991 | 392 |
| 1992 | 263 |
| 1993 | 262 |
| 1994 | 241 |
| 1995 | 452 |
| 1996 | 326 |
| 1997 | 348 |
| 1998 | 318 |
| 1999 | 292 |
| 2000 | 283 |
| 2001 | 311 |
| 2002 | 297 |
| 2003 | 363 |
| 2004 | 336 |
| 2005 | 413 |
| 2006 | 314 |
| 2007 | 313 |
| 2008 | 306 |
| 2009 | 264 |
| 2010 | 307 |
| 2011 | 363 |
| 2012 | 437 |
| 2013 | 440 |
| 2014 | 482 |
| 2015 | 483 |
| 2016 | 518 |
| 2017 | 614 |
| 2018 | 593 |
| 2019 | 565 |
| 2020 | 598 |
| 2021 | 527 |
| 2022 | 467 |
| 2023 | 409 |
| 2024 | 601 |
| 2025 | 298 |