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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1970 | 1 |
| 1971 | 3 |
| 1973 | 1 |
| 1975 | 4 |
| 1976 | 7 |
| 1977 | 6 |
| 1978 | 10 |
| 1979 | 18 |
| 1980 | 17 |
| 1981 | 21 |
| 1982 | 21 |
| 1983 | 26 |
| 1984 | 21 |
| 1985 | 21 |
| 1986 | 23 |
| 1987 | 25 |
| 1988 | 44 |
| 1989 | 38 |
| 1990 | 89 |
| 1991 | 295 |
| 1992 | 291 |
| 1993 | 206 |
| 1994 | 206 |
| 1995 | 235 |
| 1996 | 407 |
| 1997 | 380 |
| 1998 | 416 |
| 1999 | 424 |
| 2000 | 338 |
| 2001 | 343 |
| 2002 | 234 |
| 2003 | 290 |
| 2004 | 348 |
| 2005 | 344 |
| 2006 | 371 |
| 2007 | 338 |
| 2008 | 378 |
| 2009 | 330 |
| 2010 | 351 |
| 2011 | 363 |
| 2012 | 369 |
| 2013 | 421 |
| 2014 | 454 |
| 2015 | 486 |
| 2016 | 365 |
| 2017 | 404 |
| 2018 | 437 |
| 2019 | 468 |
| 2020 | 372 |
| 2021 | 155 |
| 2022 | 11 |
| 2023 | 2 |
| 2024 | 3 |