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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1972 | 2 |
| 1973 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1979 | 1 |
| 1984 | 3 |
| 1986 | 1 |
| 1987 | 8 |
| 1988 | 3 |
| 1989 | 49 |
| 1990 | 132 |
| 1991 | 349 |
| 1992 | 436 |
| 1993 | 160 |
| 1994 | 192 |
| 1995 | 286 |
| 1996 | 260 |
| 1997 | 305 |
| 1998 | 627 |
| 1999 | 286 |
| 2000 | 428 |
| 2001 | 342 |
| 2002 | 281 |
| 2003 | 369 |
| 2004 | 497 |
| 2005 | 454 |
| 2006 | 407 |
| 2007 | 378 |
| 2008 | 354 |
| 2009 | 362 |
| 2010 | 392 |
| 2011 | 509 |
| 2012 | 463 |
| 2013 | 457 |
| 2014 | 415 |
| 2015 | 434 |
| 2016 | 476 |
| 2017 | 415 |
| 2018 | 435 |
| 2019 | 490 |
| 2020 | 447 |
| 2021 | 343 |
| 2022 | 150 |
| 2023 | 107 |
| 2024 | 99 |