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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 4 |
| 1966 | 20 |
| 1967 | 23 |
| 1968 | 24 |
| 1969 | 24 |
| 1970 | 15 |
| 1971 | 25 |
| 1972 | 30 |
| 1973 | 31 |
| 1974 | 65 |
| 1975 | 73 |
| 1976 | 80 |
| 1977 | 83 |
| 1978 | 80 |
| 1979 | 127 |
| 1980 | 115 |
| 1981 | 96 |
| 1982 | 136 |
| 1983 | 147 |
| 1984 | 164 |
| 1985 | 180 |
| 1986 | 177 |
| 1987 | 194 |
| 1988 | 170 |
| 1989 | 190 |
| 1990 | 236 |
| 1991 | 214 |
| 1992 | 209 |
| 1993 | 239 |
| 1994 | 274 |
| 1995 | 273 |
| 1996 | 276 |
| 1997 | 270 |
| 1998 | 289 |
| 1999 | 246 |
| 2000 | 338 |
| 2001 | 305 |
| 2002 | 347 |
| 2003 | 307 |
| 2004 | 283 |
| 2005 | 283 |
| 2006 | 318 |
| 2007 | 294 |
| 2008 | 319 |
| 2009 | 357 |
| 2010 | 319 |
| 2011 | 331 |
| 2012 | 337 |
| 2013 | 388 |
| 2014 | 367 |
| 2015 | 352 |
| 2016 | 375 |
| 2017 | 367 |
| 2018 | 327 |
| 2019 | 322 |
| 2020 | 292 |
| 2021 | 232 |
| 2022 | 36 |
| 2023 | 4 |
| 2024 | 12 |