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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 2 |
| 1972 | 1 |
| 1975 | 1 |
| 1977 | 3 |
| 1978 | 15 |
| 1979 | 12 |
| 1980 | 31 |
| 1981 | 16 |
| 1982 | 19 |
| 1983 | 15 |
| 1984 | 32 |
| 1985 | 23 |
| 1986 | 25 |
| 1987 | 40 |
| 1988 | 50 |
| 1989 | 64 |
| 1990 | 94 |
| 1991 | 166 |
| 1992 | 130 |
| 1993 | 126 |
| 1994 | 114 |
| 1995 | 104 |
| 1996 | 92 |
| 1997 | 147 |
| 1998 | 193 |
| 1999 | 253 |
| 2000 | 246 |
| 2001 | 305 |
| 2002 | 293 |
| 2003 | 381 |
| 2004 | 393 |
| 2005 | 379 |
| 2006 | 427 |
| 2007 | 378 |
| 2008 | 339 |
| 2009 | 380 |
| 2010 | 324 |
| 2011 | 299 |
| 2012 | 340 |
| 2013 | 349 |
| 2014 | 403 |
| 2015 | 462 |
| 2016 | 421 |
| 2017 | 286 |
| 2018 | 249 |
| 2019 | 249 |
| 2020 | 248 |
| 2021 | 108 |
| 2022 | 10 |
| 2023 | 2 |
| 2024 | 0 |