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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 16 |
| 1966 | 28 |
| 1967 | 32 |
| 1968 | 40 |
| 1969 | 37 |
| 1970 | 40 |
| 1971 | 32 |
| 1972 | 33 |
| 1973 | 46 |
| 1974 | 36 |
| 1975 | 30 |
| 1976 | 37 |
| 1977 | 31 |
| 1978 | 32 |
| 1979 | 70 |
| 1980 | 90 |
| 1981 | 89 |
| 1982 | 113 |
| 1983 | 103 |
| 1984 | 127 |
| 1985 | 140 |
| 1986 | 128 |
| 1987 | 108 |
| 1988 | 122 |
| 1989 | 168 |
| 1990 | 146 |
| 1991 | 183 |
| 1992 | 144 |
| 1993 | 151 |
| 1994 | 175 |
| 1995 | 180 |
| 1996 | 167 |
| 1997 | 202 |
| 1998 | 207 |
| 1999 | 180 |
| 2000 | 196 |
| 2001 | 214 |
| 2002 | 199 |
| 2003 | 250 |
| 2004 | 272 |
| 2005 | 281 |
| 2006 | 311 |
| 2007 | 345 |
| 2008 | 322 |
| 2009 | 372 |
| 2010 | 374 |
| 2011 | 381 |
| 2012 | 447 |
| 2013 | 452 |
| 2014 | 533 |
| 2015 | 478 |
| 2016 | 458 |
| 2017 | 446 |
| 2018 | 421 |
| 2019 | 464 |
| 2020 | 415 |
| 2021 | 291 |
| 2022 | 201 |
| 2023 | 174 |
| 2024 | 47 |