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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 59 |
| 1966 | 91 |
| 1967 | 99 |
| 1968 | 90 |
| 1969 | 113 |
| 1970 | 122 |
| 1971 | 120 |
| 1972 | 146 |
| 1973 | 163 |
| 1974 | 199 |
| 1975 | 215 |
| 1976 | 238 |
| 1977 | 225 |
| 1978 | 180 |
| 1979 | 174 |
| 1980 | 141 |
| 1981 | 122 |
| 1982 | 78 |
| 1983 | 65 |
| 1984 | 43 |
| 1985 | 63 |
| 1986 | 56 |
| 1987 | 51 |
| 1988 | 78 |
| 1989 | 76 |
| 1990 | 110 |
| 1991 | 135 |
| 1992 | 167 |
| 1993 | 219 |
| 1994 | 255 |
| 1995 | 328 |
| 1996 | 361 |
| 1997 | 297 |
| 1998 | 310 |
| 1999 | 304 |
| 2000 | 319 |
| 2001 | 320 |
| 2002 | 319 |
| 2003 | 296 |
| 2004 | 300 |
| 2005 | 292 |
| 2006 | 322 |
| 2007 | 313 |
| 2008 | 320 |
| 2009 | 335 |
| 2010 | 341 |
| 2011 | 355 |
| 2012 | 316 |
| 2013 | 340 |
| 2014 | 367 |
| 2015 | 369 |
| 2016 | 344 |
| 2017 | 277 |
| 2018 | 217 |
| 2019 | 216 |
| 2020 | 256 |
| 2021 | 223 |
| 2022 | 52 |
| 2023 | 31 |
| 2024 | 12 |