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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1971 | 1 |
| 1975 | 5 |
| 1976 | 8 |
| 1977 | 16 |
| 1978 | 28 |
| 1979 | 35 |
| 1980 | 40 |
| 1981 | 20 |
| 1982 | 23 |
| 1983 | 27 |
| 1984 | 32 |
| 1985 | 42 |
| 1986 | 43 |
| 1987 | 50 |
| 1988 | 61 |
| 1989 | 71 |
| 1990 | 80 |
| 1991 | 104 |
| 1992 | 146 |
| 1993 | 125 |
| 1994 | 137 |
| 1995 | 95 |
| 1996 | 115 |
| 1997 | 171 |
| 1998 | 248 |
| 1999 | 354 |
| 2000 | 255 |
| 2001 | 186 |
| 2002 | 195 |
| 2003 | 304 |
| 2004 | 366 |
| 2005 | 350 |
| 2006 | 333 |
| 2007 | 415 |
| 2008 | 425 |
| 2009 | 376 |
| 2010 | 458 |
| 2011 | 522 |
| 2012 | 549 |
| 2013 | 574 |
| 2014 | 566 |
| 2015 | 632 |
| 2016 | 616 |
| 2017 | 614 |
| 2018 | 580 |
| 2019 | 576 |
| 2020 | 498 |
| 2021 | 242 |
| 2022 | 70 |
| 2023 | 47 |
| 2024 | 361 |
| 2025 | 374 |