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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 16 |
| 1970 | 47 |
| 1971 | 41 |
| 1972 | 157 |
| 1973 | 194 |
| 1974 | 467 |
| 1975 | 732 |
| 1976 | 704 |
| 1977 | 413 |
| 1978 | 406 |
| 1979 | 371 |
| 1980 | 402 |
| 1981 | 379 |
| 1982 | 339 |
| 1983 | 406 |
| 1984 | 421 |
| 1985 | 586 |
| 1986 | 505 |
| 1987 | 503 |
| 1988 | 488 |
| 1989 | 587 |
| 1990 | 585 |
| 1991 | 523 |
| 1992 | 544 |
| 1993 | 498 |
| 1994 | 526 |
| 1995 | 510 |
| 1996 | 491 |
| 1997 | 637 |
| 1998 | 919 |
| 1999 | 1059 |
| 2000 | 1075 |
| 2001 | 1195 |
| 2002 | 1174 |
| 2003 | 1188 |
| 2004 | 1271 |
| 2005 | 1379 |
| 2006 | 1688 |
| 2007 | 1913 |
| 2008 | 1758 |
| 2009 | 1627 |
| 2010 | 1645 |
| 2011 | 1772 |
| 2012 | 1709 |
| 2013 | 1645 |
| 2014 | 1238 |
| 2015 | 1117 |
| 2016 | 1004 |
| 2017 | 851 |
| 2018 | 601 |
| 2019 | 497 |
| 2020 | 366 |
| 2021 | 213 |
| 2022 | 32 |
| 2023 | 10 |
| 2024 | 8 |