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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1958 | 3 |
| 1961 | 2 |
| 1962 | 1 |
| 1963 | 1 |
| 1965 | 3 |
| 1966 | 1 |
| 1967 | 2 |
| 1969 | 1 |
| 1972 | 1 |
| 1974 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1981 | 2 |
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 6 |
| 1989 | 1 |
| 1991 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1995 | 2 |
| 1996 | 1 |
| 1998 | 2 |
| 2001 | 1 |
| 2002 | 3 |
| 2005 | 1 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 4 |
| 2010 | 1 |
| 2012 | 1 |
| 2014 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2024 | 1 |