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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1965 | 1 |
| 1967 | 1 |
| 1968 | 24 |
| 1969 | 81 |
| 1970 | 68 |
| 1971 | 108 |
| 1972 | 142 |
| 1973 | 170 |
| 1974 | 193 |
| 1975 | 198 |
| 1976 | 184 |
| 1977 | 206 |
| 1978 | 244 |
| 1979 | 238 |
| 1980 | 239 |
| 1981 | 238 |
| 1982 | 344 |
| 1983 | 361 |
| 1984 | 379 |
| 1985 | 395 |
| 1986 | 391 |
| 1987 | 441 |
| 1988 | 463 |
| 1989 | 568 |
| 1990 | 613 |
| 1991 | 536 |
| 1992 | 557 |
| 1993 | 498 |
| 1994 | 563 |
| 1995 | 508 |
| 1996 | 435 |
| 1997 | 403 |
| 1998 | 331 |
| 1999 | 366 |
| 2000 | 313 |
| 2001 | 331 |
| 2002 | 244 |
| 2003 | 249 |
| 2004 | 218 |
| 2005 | 217 |
| 2006 | 257 |
| 2007 | 274 |
| 2008 | 229 |
| 2009 | 200 |
| 2010 | 196 |
| 2011 | 207 |
| 2012 | 234 |
| 2013 | 240 |
| 2014 | 188 |
| 2015 | 176 |
| 2016 | 175 |
| 2017 | 196 |
| 2018 | 156 |
| 2019 | 148 |
| 2020 | 123 |
| 2021 | 76 |
| 2022 | 7 |
| 2023 | 3 |
| 2024 | 2 |