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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1962 | 1 |
| 1963 | 2 |
| 1965 | 2 |
| 1967 | 1 |
| 1968 | 2 |
| 1973 | 1 |
| 1975 | 4 |
| 1976 | 2 |
| 1977 | 2 |
| 1978 | 2 |
| 1980 | 3 |
| 1981 | 3 |
| 1982 | 2 |
| 1983 | 3 |
| 1985 | 3 |
| 1987 | 4 |
| 1988 | 3 |
| 1989 | 1 |
| 1992 | 1 |
| 1993 | 6 |
| 1994 | 3 |
| 1995 | 3 |
| 2003 | 1 |
| 2008 | 1 |
| 2012 | 1 |
| 2015 | 2 |
| 2016 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2022 | 2 |
| 2025 | 3 |