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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1964 | 13 |
| 1965 | 71 |
| 1966 | 119 |
| 1967 | 145 |
| 1968 | 156 |
| 1969 | 149 |
| 1970 | 161 |
| 1971 | 146 |
| 1972 | 115 |
| 1973 | 191 |
| 1974 | 178 |
| 1975 | 186 |
| 1976 | 174 |
| 1977 | 187 |
| 1978 | 185 |
| 1979 | 262 |
| 1980 | 214 |
| 1981 | 267 |
| 1982 | 275 |
| 1983 | 315 |
| 1984 | 302 |
| 1985 | 298 |
| 1986 | 327 |
| 1987 | 339 |
| 1988 | 371 |
| 1989 | 368 |
| 1990 | 369 |
| 1991 | 406 |
| 1992 | 319 |
| 1993 | 347 |
| 1994 | 291 |
| 1995 | 279 |
| 1996 | 249 |
| 1997 | 251 |
| 1998 | 241 |
| 1999 | 264 |
| 2000 | 256 |
| 2001 | 348 |
| 2002 | 410 |
| 2003 | 450 |
| 2004 | 506 |
| 2005 | 377 |
| 2006 | 268 |
| 2007 | 384 |
| 2008 | 502 |
| 2009 | 443 |
| 2010 | 473 |
| 2011 | 467 |
| 2012 | 491 |
| 2013 | 497 |
| 2014 | 536 |
| 2015 | 506 |
| 2016 | 472 |
| 2017 | 490 |
| 2018 | 472 |
| 2019 | 499 |
| 2020 | 440 |
| 2021 | 327 |
| 2022 | 185 |
| 2023 | 138 |
| 2024 | 67 |