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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1969 | 1 |
| 1973 | 1 |
| 1977 | 1 |
| 1978 | 3 |
| 1979 | 2 |
| 1980 | 11 |
| 1981 | 12 |
| 1982 | 19 |
| 1983 | 22 |
| 1984 | 22 |
| 1985 | 26 |
| 1986 | 30 |
| 1987 | 20 |
| 1988 | 29 |
| 1989 | 14 |
| 1990 | 36 |
| 1991 | 123 |
| 1992 | 141 |
| 1993 | 146 |
| 1994 | 138 |
| 1995 | 146 |
| 1996 | 175 |
| 1997 | 201 |
| 1998 | 189 |
| 1999 | 266 |
| 2000 | 202 |
| 2001 | 290 |
| 2002 | 269 |
| 2003 | 253 |
| 2004 | 254 |
| 2005 | 290 |
| 2006 | 332 |
| 2007 | 381 |
| 2008 | 307 |
| 2009 | 308 |
| 2010 | 343 |
| 2011 | 320 |
| 2012 | 370 |
| 2013 | 358 |
| 2014 | 377 |
| 2015 | 426 |
| 2016 | 427 |
| 2017 | 410 |
| 2018 | 408 |
| 2019 | 368 |
| 2020 | 310 |
| 2021 | 122 |
| 2022 | 17 |
| 2023 | 11 |
| 2024 | 11 |