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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1972 | 3 |
| 1973 | 52 |
| 1974 | 76 |
| 1975 | 69 |
| 1976 | 100 |
| 1977 | 138 |
| 1978 | 137 |
| 1979 | 182 |
| 1980 | 280 |
| 1981 | 266 |
| 1982 | 292 |
| 1983 | 285 |
| 1984 | 360 |
| 1985 | 414 |
| 1986 | 478 |
| 1987 | 408 |
| 1988 | 377 |
| 1989 | 416 |
| 1990 | 504 |
| 1991 | 507 |
| 1992 | 510 |
| 1993 | 513 |
| 1994 | 530 |
| 1995 | 496 |
| 1996 | 523 |
| 1997 | 456 |
| 1998 | 473 |
| 1999 | 442 |
| 2000 | 425 |
| 2001 | 384 |
| 2002 | 367 |
| 2003 | 394 |
| 2004 | 389 |
| 2005 | 380 |
| 2006 | 435 |
| 2007 | 395 |
| 2008 | 332 |
| 2009 | 346 |
| 2010 | 386 |
| 2011 | 379 |
| 2012 | 382 |
| 2013 | 350 |
| 2014 | 347 |
| 2015 | 371 |
| 2016 | 369 |
| 2017 | 337 |
| 2018 | 300 |
| 2019 | 264 |
| 2020 | 270 |
| 2021 | 241 |
| 2022 | 183 |
| 2023 | 141 |
| 2024 | 62 |