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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1972 | 1 |
| 1974 | 8 |
| 1975 | 9 |
| 1976 | 11 |
| 1977 | 12 |
| 1978 | 26 |
| 1979 | 38 |
| 1980 | 46 |
| 1981 | 65 |
| 1982 | 38 |
| 1983 | 50 |
| 1984 | 45 |
| 1985 | 47 |
| 1986 | 77 |
| 1987 | 59 |
| 1988 | 97 |
| 1989 | 160 |
| 1990 | 168 |
| 1991 | 238 |
| 1992 | 259 |
| 1993 | 343 |
| 1994 | 296 |
| 1995 | 359 |
| 1996 | 356 |
| 1997 | 381 |
| 1998 | 419 |
| 1999 | 418 |
| 2000 | 443 |
| 2001 | 518 |
| 2002 | 523 |
| 2003 | 571 |
| 2004 | 583 |
| 2005 | 541 |
| 2006 | 524 |
| 2007 | 548 |
| 2008 | 511 |
| 2009 | 376 |
| 2010 | 333 |
| 2011 | 192 |
| 2012 | 184 |
| 2013 | 167 |
| 2014 | 197 |
| 2015 | 168 |
| 2016 | 129 |
| 2017 | 99 |
| 2018 | 87 |
| 2019 | 104 |
| 2020 | 75 |
| 2021 | 36 |
| 2022 | 1 |
| 2023 | 5 |
| 2024 | 27 |
| 2025 | 47 |