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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 33 |
| 1965 | 62 |
| 1966 | 52 |
| 1967 | 91 |
| 1968 | 93 |
| 1969 | 129 |
| 1970 | 128 |
| 1971 | 129 |
| 1972 | 130 |
| 1973 | 192 |
| 1974 | 215 |
| 1975 | 331 |
| 1976 | 307 |
| 1977 | 256 |
| 1978 | 325 |
| 1979 | 377 |
| 1980 | 392 |
| 1981 | 427 |
| 1982 | 597 |
| 1983 | 578 |
| 1984 | 489 |
| 1985 | 547 |
| 1986 | 474 |
| 1987 | 527 |
| 1988 | 611 |
| 1989 | 640 |
| 1990 | 601 |
| 1991 | 624 |
| 1992 | 679 |
| 1993 | 566 |
| 1994 | 612 |
| 1995 | 530 |
| 1996 | 612 |
| 1997 | 591 |
| 1998 | 624 |
| 1999 | 597 |
| 2000 | 507 |
| 2001 | 499 |
| 2002 | 388 |
| 2003 | 379 |
| 2004 | 421 |
| 2005 | 476 |
| 2006 | 439 |
| 2007 | 507 |
| 2008 | 533 |
| 2009 | 438 |
| 2010 | 433 |
| 2011 | 424 |
| 2012 | 357 |
| 2013 | 243 |
| 2014 | 116 |
| 2015 | 126 |
| 2016 | 57 |
| 2017 | 59 |
| 2018 | 48 |
| 2019 | 22 |
| 2020 | 35 |
| 2021 | 21 |
| 2022 | 26 |
| 2023 | 27 |
| 2024 | 7 |