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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1967 | 2 |
| 1969 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1978 | 1 |
| 1979 | 18 |
| 1980 | 52 |
| 1981 | 47 |
| 1982 | 60 |
| 1983 | 67 |
| 1984 | 94 |
| 1985 | 92 |
| 1986 | 86 |
| 1987 | 91 |
| 1988 | 94 |
| 1989 | 134 |
| 1990 | 164 |
| 1991 | 142 |
| 1992 | 177 |
| 1993 | 163 |
| 1994 | 203 |
| 1995 | 205 |
| 1996 | 168 |
| 1997 | 219 |
| 1998 | 226 |
| 1999 | 221 |
| 2000 | 237 |
| 2001 | 227 |
| 2002 | 248 |
| 2003 | 273 |
| 2004 | 268 |
| 2005 | 330 |
| 2006 | 323 |
| 2007 | 311 |
| 2008 | 381 |
| 2009 | 430 |
| 2010 | 372 |
| 2011 | 436 |
| 2012 | 495 |
| 2013 | 459 |
| 2014 | 468 |
| 2015 | 424 |
| 2016 | 336 |
| 2017 | 315 |
| 2018 | 308 |
| 2019 | 312 |
| 2020 | 222 |
| 2021 | 135 |
| 2022 | 33 |
| 2023 | 11 |
| 2024 | 9 |