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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 22 |
| 1967 | 49 |
| 1968 | 64 |
| 1969 | 83 |
| 1970 | 92 |
| 1971 | 105 |
| 1972 | 146 |
| 1973 | 117 |
| 1974 | 142 |
| 1975 | 139 |
| 1976 | 128 |
| 1977 | 143 |
| 1978 | 186 |
| 1979 | 190 |
| 1980 | 236 |
| 1981 | 243 |
| 1982 | 284 |
| 1983 | 303 |
| 1984 | 281 |
| 1985 | 344 |
| 1986 | 277 |
| 1987 | 364 |
| 1988 | 317 |
| 1989 | 356 |
| 1990 | 408 |
| 1991 | 445 |
| 1992 | 506 |
| 1993 | 475 |
| 1994 | 373 |
| 1995 | 434 |
| 1996 | 475 |
| 1997 | 405 |
| 1998 | 417 |
| 1999 | 398 |
| 2000 | 415 |
| 2001 | 465 |
| 2002 | 506 |
| 2003 | 500 |
| 2004 | 523 |
| 2005 | 512 |
| 2006 | 518 |
| 2007 | 532 |
| 2008 | 559 |
| 2009 | 527 |
| 2010 | 604 |
| 2011 | 693 |
| 2012 | 791 |
| 2013 | 757 |
| 2014 | 753 |
| 2015 | 779 |
| 2016 | 726 |
| 2017 | 778 |
| 2018 | 743 |
| 2019 | 763 |
| 2020 | 728 |
| 2021 | 640 |
| 2022 | 590 |
| 2023 | 497 |
| 2024 | 228 |