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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 22 |
| 1971 | 44 |
| 1972 | 38 |
| 1973 | 11 |
| 1974 | 12 |
| 1975 | 23 |
| 1976 | 6 |
| 1977 | 26 |
| 1978 | 23 |
| 1979 | 41 |
| 1980 | 165 |
| 1981 | 419 |
| 1982 | 507 |
| 1983 | 630 |
| 1984 | 566 |
| 1985 | 459 |
| 1986 | 519 |
| 1987 | 444 |
| 1988 | 400 |
| 1989 | 373 |
| 1990 | 296 |
| 1991 | 270 |
| 1992 | 205 |
| 1993 | 171 |
| 1994 | 154 |
| 1995 | 138 |
| 1996 | 101 |
| 1997 | 92 |
| 1998 | 112 |
| 1999 | 89 |
| 2000 | 83 |
| 2001 | 85 |
| 2002 | 63 |
| 2003 | 91 |
| 2004 | 78 |
| 2005 | 78 |
| 2006 | 80 |
| 2007 | 77 |
| 2008 | 65 |
| 2009 | 60 |
| 2010 | 51 |
| 2011 | 62 |
| 2012 | 63 |
| 2013 | 60 |
| 2014 | 53 |
| 2015 | 45 |
| 2016 | 36 |
| 2017 | 31 |
| 2018 | 42 |
| 2019 | 24 |
| 2020 | 20 |
| 2021 | 13 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 0 |