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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1955 | 1 |
| 1957 | 1 |
| 1958 | 2 |
| 1960 | 1 |
| 1962 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 3 |
| 1966 | 1 |
| 1968 | 1 |
| 1969 | 4 |
| 1970 | 1 |
| 1972 | 2 |
| 1974 | 1 |
| 1975 | 1 |
| 1977 | 1 |
| 1979 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1984 | 1 |
| 1986 | 3 |
| 1987 | 1 |
| 1988 | 9 |
| 1990 | 4 |
| 1991 | 3 |
| 1992 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1999 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2012 | 1 |
| 2014 | 1 |
| 2016 | 21 |
| 2017 | 30 |
| 2018 | 26 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 4 |