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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 2 |
| 1966 | 1 |
| 1973 | 3 |
| 1974 | 1 |
| 1975 | 16 |
| 1976 | 3 |
| 1977 | 18 |
| 1978 | 58 |
| 1979 | 61 |
| 1980 | 48 |
| 1981 | 47 |
| 1982 | 38 |
| 1983 | 42 |
| 1984 | 58 |
| 1985 | 68 |
| 1986 | 76 |
| 1987 | 74 |
| 1988 | 111 |
| 1989 | 97 |
| 1990 | 160 |
| 1991 | 262 |
| 1992 | 341 |
| 1993 | 312 |
| 1994 | 322 |
| 1995 | 297 |
| 1996 | 237 |
| 1997 | 363 |
| 1998 | 362 |
| 1999 | 341 |
| 2000 | 315 |
| 2001 | 288 |
| 2002 | 310 |
| 2003 | 389 |
| 2004 | 346 |
| 2005 | 280 |
| 2006 | 269 |
| 2007 | 320 |
| 2008 | 298 |
| 2009 | 277 |
| 2010 | 306 |
| 2011 | 307 |
| 2012 | 281 |
| 2013 | 254 |
| 2014 | 281 |
| 2015 | 229 |
| 2016 | 207 |
| 2017 | 147 |
| 2018 | 118 |
| 2019 | 132 |
| 2020 | 99 |
| 2021 | 40 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 1 |