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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1972 | 6 |
| 1973 | 11 |
| 1974 | 10 |
| 1975 | 23 |
| 1976 | 15 |
| 1977 | 11 |
| 1978 | 8 |
| 1979 | 38 |
| 1980 | 34 |
| 1981 | 39 |
| 1982 | 29 |
| 1983 | 28 |
| 1984 | 36 |
| 1985 | 40 |
| 1986 | 48 |
| 1987 | 77 |
| 1988 | 90 |
| 1989 | 99 |
| 1990 | 93 |
| 1991 | 167 |
| 1992 | 213 |
| 1993 | 240 |
| 1994 | 245 |
| 1995 | 226 |
| 1996 | 210 |
| 1997 | 237 |
| 1998 | 234 |
| 1999 | 231 |
| 2000 | 233 |
| 2001 | 274 |
| 2002 | 252 |
| 2003 | 289 |
| 2004 | 363 |
| 2005 | 336 |
| 2006 | 343 |
| 2007 | 387 |
| 2008 | 389 |
| 2009 | 444 |
| 2010 | 442 |
| 2011 | 505 |
| 2012 | 536 |
| 2013 | 549 |
| 2014 | 590 |
| 2015 | 623 |
| 2016 | 653 |
| 2017 | 592 |
| 2018 | 590 |
| 2019 | 586 |
| 2020 | 433 |
| 2021 | 256 |
| 2022 | 75 |
| 2023 | 21 |
| 2024 | 17 |