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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 2 |
| 1971 | 3 |
| 1972 | 2 |
| 1973 | 8 |
| 1974 | 6 |
| 1975 | 3 |
| 1976 | 1 |
| 1977 | 6 |
| 1978 | 6 |
| 1979 | 8 |
| 1980 | 23 |
| 1981 | 23 |
| 1982 | 26 |
| 1983 | 69 |
| 1984 | 90 |
| 1985 | 32 |
| 1986 | 24 |
| 1987 | 22 |
| 1988 | 18 |
| 1989 | 27 |
| 1990 | 34 |
| 1991 | 119 |
| 1992 | 261 |
| 1993 | 343 |
| 1994 | 384 |
| 1995 | 330 |
| 1996 | 317 |
| 1997 | 255 |
| 1998 | 275 |
| 1999 | 292 |
| 2000 | 244 |
| 2001 | 231 |
| 2002 | 165 |
| 2003 | 196 |
| 2004 | 218 |
| 2005 | 225 |
| 2006 | 237 |
| 2007 | 288 |
| 2008 | 294 |
| 2009 | 294 |
| 2010 | 359 |
| 2011 | 429 |
| 2012 | 363 |
| 2013 | 284 |
| 2014 | 223 |
| 2015 | 293 |
| 2016 | 304 |
| 2017 | 236 |
| 2018 | 211 |
| 2019 | 200 |
| 2020 | 159 |
| 2021 | 101 |
| 2022 | 49 |
| 2023 | 49 |
| 2024 | 18 |