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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 104 |
| 1964 | 100 |
| 1965 | 129 |
| 1966 | 133 |
| 1967 | 135 |
| 1968 | 167 |
| 1969 | 176 |
| 1970 | 197 |
| 1971 | 246 |
| 1972 | 314 |
| 1973 | 292 |
| 1974 | 333 |
| 1975 | 310 |
| 1976 | 342 |
| 1977 | 394 |
| 1978 | 363 |
| 1979 | 369 |
| 1980 | 362 |
| 1981 | 358 |
| 1982 | 454 |
| 1983 | 423 |
| 1984 | 441 |
| 1985 | 407 |
| 1986 | 481 |
| 1987 | 474 |
| 1988 | 495 |
| 1989 | 471 |
| 1990 | 520 |
| 1991 | 494 |
| 1992 | 491 |
| 1993 | 537 |
| 1994 | 478 |
| 1995 | 443 |
| 1996 | 494 |
| 1997 | 447 |
| 1998 | 435 |
| 1999 | 437 |
| 2000 | 454 |
| 2001 | 470 |
| 2002 | 474 |
| 2003 | 514 |
| 2004 | 575 |
| 2005 | 510 |
| 2006 | 537 |
| 2007 | 511 |
| 2008 | 651 |
| 2009 | 655 |
| 2010 | 577 |
| 2011 | 574 |
| 2012 | 574 |
| 2013 | 745 |
| 2014 | 776 |
| 2015 | 747 |
| 2016 | 642 |
| 2017 | 539 |
| 2018 | 467 |
| 2019 | 489 |
| 2020 | 502 |
| 2021 | 507 |
| 2022 | 552 |
| 2023 | 565 |
| 2024 | 524 |
| 2025 | 389 |