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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 1 |
| 1971 | 1 |
| 1972 | 5 |
| 1973 | 12 |
| 1974 | 198 |
| 1975 | 384 |
| 1976 | 296 |
| 1977 | 292 |
| 1978 | 342 |
| 1979 | 388 |
| 1980 | 369 |
| 1981 | 382 |
| 1982 | 357 |
| 1983 | 431 |
| 1984 | 391 |
| 1985 | 376 |
| 1986 | 445 |
| 1987 | 378 |
| 1988 | 338 |
| 1989 | 287 |
| 1990 | 360 |
| 1991 | 284 |
| 1992 | 249 |
| 1993 | 232 |
| 1994 | 268 |
| 1995 | 253 |
| 1996 | 219 |
| 1997 | 178 |
| 1998 | 192 |
| 1999 | 149 |
| 2000 | 136 |
| 2001 | 147 |
| 2002 | 139 |
| 2003 | 128 |
| 2004 | 134 |
| 2005 | 125 |
| 2006 | 111 |
| 2007 | 100 |
| 2008 | 102 |
| 2009 | 82 |
| 2010 | 81 |
| 2011 | 98 |
| 2012 | 65 |
| 2013 | 70 |
| 2014 | 55 |
| 2015 | 62 |
| 2016 | 46 |
| 2017 | 49 |
| 2018 | 51 |
| 2019 | 34 |
| 2020 | 35 |
| 2021 | 30 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 0 |