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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 21 |
| 1965 | 16 |
| 1966 | 25 |
| 1967 | 13 |
| 1968 | 33 |
| 1969 | 48 |
| 1970 | 42 |
| 1971 | 49 |
| 1972 | 36 |
| 1973 | 64 |
| 1974 | 93 |
| 1975 | 80 |
| 1976 | 101 |
| 1977 | 103 |
| 1978 | 171 |
| 1979 | 135 |
| 1980 | 120 |
| 1981 | 177 |
| 1982 | 233 |
| 1983 | 181 |
| 1984 | 184 |
| 1985 | 279 |
| 1986 | 268 |
| 1987 | 309 |
| 1988 | 278 |
| 1989 | 349 |
| 1990 | 337 |
| 1991 | 415 |
| 1992 | 400 |
| 1993 | 423 |
| 1994 | 360 |
| 1995 | 376 |
| 1996 | 542 |
| 1997 | 294 |
| 1998 | 350 |
| 1999 | 277 |
| 2000 | 324 |
| 2001 | 237 |
| 2002 | 412 |
| 2003 | 161 |
| 2004 | 176 |
| 2005 | 225 |
| 2006 | 212 |
| 2007 | 169 |
| 2008 | 192 |
| 2009 | 237 |
| 2010 | 315 |
| 2011 | 270 |
| 2012 | 140 |
| 2013 | 110 |
| 2014 | 187 |
| 2015 | 144 |
| 2016 | 163 |
| 2017 | 184 |
| 2018 | 171 |
| 2019 | 133 |
| 2020 | 130 |
| 2021 | 142 |
| 2022 | 136 |
| 2023 | 168 |
| 2024 | 56 |