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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1954 | 1 |
| 1956 | 1 |
| 1959 | 1 |
| 1962 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 2 |
| 1972 | 2 |
| 1974 | 1 |
| 1975 | 3 |
| 1977 | 5 |
| 1978 | 2 |
| 1979 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 2 |
| 1986 | 1 |
| 1992 | 5 |
| 1993 | 1 |
| 1996 | 1 |
| 2007 | 2 |
| 2008 | 2 |
| 2009 | 1 |
| 2011 | 1 |
| 2012 | 1 |
| 2014 | 1 |
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 0 |