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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 18 |
| 1966 | 43 |
| 1967 | 53 |
| 1968 | 52 |
| 1969 | 99 |
| 1970 | 149 |
| 1971 | 186 |
| 1972 | 266 |
| 1973 | 367 |
| 1974 | 445 |
| 1975 | 511 |
| 1976 | 457 |
| 1977 | 521 |
| 1978 | 521 |
| 1979 | 583 |
| 1980 | 548 |
| 1981 | 468 |
| 1982 | 498 |
| 1983 | 501 |
| 1984 | 546 |
| 1985 | 574 |
| 1986 | 548 |
| 1987 | 451 |
| 1988 | 419 |
| 1989 | 397 |
| 1990 | 475 |
| 1991 | 484 |
| 1992 | 419 |
| 1993 | 432 |
| 1994 | 395 |
| 1995 | 397 |
| 1996 | 382 |
| 1997 | 341 |
| 1998 | 320 |
| 1999 | 368 |
| 2000 | 356 |
| 2001 | 332 |
| 2002 | 326 |
| 2003 | 334 |
| 2004 | 354 |
| 2005 | 373 |
| 2006 | 347 |
| 2007 | 323 |
| 2008 | 312 |
| 2009 | 316 |
| 2010 | 364 |
| 2011 | 390 |
| 2012 | 413 |
| 2013 | 357 |
| 2014 | 385 |
| 2015 | 318 |
| 2016 | 336 |
| 2017 | 302 |
| 2018 | 304 |
| 2019 | 297 |
| 2020 | 259 |
| 2021 | 231 |
| 2022 | 252 |
| 2023 | 29 |