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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1977 | 1 |
| 1978 | 6 |
| 1979 | 6 |
| 1980 | 3 |
| 1981 | 12 |
| 1982 | 10 |
| 1983 | 12 |
| 1984 | 22 |
| 1985 | 28 |
| 1986 | 28 |
| 1987 | 40 |
| 1988 | 45 |
| 1989 | 77 |
| 1990 | 97 |
| 1991 | 106 |
| 1992 | 147 |
| 1993 | 178 |
| 1994 | 180 |
| 1995 | 215 |
| 1996 | 235 |
| 1997 | 231 |
| 1998 | 230 |
| 1999 | 237 |
| 2000 | 306 |
| 2001 | 258 |
| 2002 | 257 |
| 2003 | 261 |
| 2004 | 327 |
| 2005 | 345 |
| 2006 | 390 |
| 2007 | 352 |
| 2008 | 370 |
| 2009 | 396 |
| 2010 | 405 |
| 2011 | 449 |
| 2012 | 447 |
| 2013 | 469 |
| 2014 | 407 |
| 2015 | 466 |
| 2016 | 429 |
| 2017 | 451 |
| 2018 | 411 |
| 2019 | 357 |
| 2020 | 361 |
| 2021 | 374 |
| 2022 | 343 |
| 2023 | 301 |
| 2024 | 136 |