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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 2 |
| 1958 | 6 |
| 1959 | 6 |
| 1960 | 2 |
| 1961 | 4 |
| 1962 | 4 |
| 1964 | 1 |
| 1965 | 7 |
| 1966 | 13 |
| 1967 | 32 |
| 1968 | 20 |
| 1972 | 1 |
| 1974 | 1 |
| 1977 | 1 |
| 1987 | 3 |
| 1989 | 53 |
| 1990 | 148 |
| 1991 | 153 |
| 1992 | 156 |
| 1993 | 124 |
| 1994 | 154 |
| 1995 | 152 |
| 1996 | 165 |
| 1997 | 143 |
| 1998 | 213 |
| 1999 | 254 |
| 2000 | 289 |
| 2001 | 337 |
| 2002 | 320 |
| 2003 | 388 |
| 2004 | 379 |
| 2005 | 411 |
| 2006 | 433 |
| 2007 | 416 |
| 2008 | 459 |
| 2009 | 460 |
| 2010 | 380 |
| 2011 | 401 |
| 2012 | 363 |
| 2013 | 393 |
| 2014 | 373 |
| 2015 | 338 |
| 2016 | 312 |
| 2017 | 296 |
| 2018 | 296 |
| 2019 | 324 |
| 2020 | 271 |
| 2021 | 233 |
| 2022 | 80 |
| 2023 | 39 |
| 2024 | 19 |