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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 2 |
| 1966 | 16 |
| 1967 | 39 |
| 1968 | 30 |
| 1969 | 51 |
| 1970 | 43 |
| 1971 | 83 |
| 1972 | 73 |
| 1973 | 101 |
| 1974 | 111 |
| 1975 | 170 |
| 1976 | 117 |
| 1977 | 144 |
| 1978 | 139 |
| 1979 | 155 |
| 1980 | 187 |
| 1981 | 219 |
| 1982 | 272 |
| 1983 | 255 |
| 1984 | 312 |
| 1985 | 337 |
| 1986 | 345 |
| 1987 | 384 |
| 1988 | 336 |
| 1989 | 356 |
| 1990 | 378 |
| 1991 | 384 |
| 1992 | 405 |
| 1993 | 385 |
| 1994 | 356 |
| 1995 | 376 |
| 1996 | 426 |
| 1997 | 361 |
| 1998 | 365 |
| 1999 | 409 |
| 2000 | 421 |
| 2001 | 329 |
| 2002 | 295 |
| 2003 | 324 |
| 2004 | 331 |
| 2005 | 290 |
| 2006 | 321 |
| 2007 | 271 |
| 2008 | 307 |
| 2009 | 343 |
| 2010 | 332 |
| 2011 | 371 |
| 2012 | 404 |
| 2013 | 380 |
| 2014 | 364 |
| 2015 | 333 |
| 2016 | 368 |
| 2017 | 377 |
| 2018 | 343 |
| 2019 | 327 |
| 2020 | 301 |
| 2021 | 297 |
| 2022 | 246 |
| 2023 | 193 |
| 2024 | 40 |