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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 4 |
| 1960 | 10 |
| 1961 | 12 |
| 1964 | 1 |
| 1965 | 13 |
| 1966 | 15 |
| 1967 | 10 |
| 1971 | 2 |
| 1972 | 1 |
| 1974 | 5 |
| 1975 | 4 |
| 1976 | 1 |
| 1977 | 44 |
| 1978 | 188 |
| 1979 | 176 |
| 1980 | 269 |
| 1981 | 340 |
| 1982 | 351 |
| 1983 | 353 |
| 1984 | 359 |
| 1985 | 425 |
| 1986 | 381 |
| 1987 | 443 |
| 1988 | 385 |
| 1989 | 467 |
| 1990 | 450 |
| 1991 | 429 |
| 1992 | 452 |
| 1993 | 451 |
| 1994 | 421 |
| 1995 | 367 |
| 1996 | 363 |
| 1997 | 368 |
| 1998 | 413 |
| 1999 | 342 |
| 2000 | 365 |
| 2001 | 369 |
| 2002 | 375 |
| 2003 | 420 |
| 2004 | 424 |
| 2005 | 451 |
| 2006 | 421 |
| 2007 | 435 |
| 2008 | 449 |
| 2009 | 445 |
| 2010 | 496 |
| 2011 | 458 |
| 2012 | 499 |
| 2013 | 522 |
| 2014 | 471 |
| 2015 | 498 |
| 2016 | 426 |
| 2017 | 448 |
| 2018 | 355 |
| 2019 | 366 |
| 2020 | 415 |
| 2021 | 414 |
| 2022 | 308 |
| 2023 | 254 |
| 2024 | 290 |
| 2025 | 184 |