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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 35 |
| 1967 | 58 |
| 1968 | 38 |
| 1969 | 89 |
| 1970 | 92 |
| 1971 | 89 |
| 1972 | 107 |
| 1973 | 114 |
| 1974 | 133 |
| 1975 | 120 |
| 1976 | 138 |
| 1977 | 142 |
| 1978 | 150 |
| 1979 | 169 |
| 1980 | 148 |
| 1981 | 157 |
| 1982 | 132 |
| 1983 | 146 |
| 1984 | 148 |
| 1985 | 163 |
| 1986 | 136 |
| 1987 | 127 |
| 1988 | 157 |
| 1989 | 193 |
| 1990 | 197 |
| 1991 | 213 |
| 1992 | 257 |
| 1993 | 363 |
| 1994 | 378 |
| 1995 | 364 |
| 1996 | 307 |
| 1997 | 296 |
| 1998 | 339 |
| 1999 | 444 |
| 2000 | 441 |
| 2001 | 466 |
| 2002 | 480 |
| 2003 | 495 |
| 2004 | 637 |
| 2005 | 553 |
| 2006 | 537 |
| 2007 | 446 |
| 2008 | 444 |
| 2009 | 479 |
| 2010 | 470 |
| 2011 | 431 |
| 2012 | 675 |
| 2013 | 611 |
| 2014 | 507 |
| 2015 | 474 |
| 2016 | 474 |
| 2017 | 395 |
| 2018 | 424 |
| 2019 | 376 |
| 2020 | 421 |
| 2021 | 411 |
| 2022 | 348 |
| 2023 | 103 |