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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1954 | 2 |
| 1955 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1960 | 1 |
| 1967 | 2 |
| 1970 | 1 |
| 1973 | 2 |
| 1977 | 2 |
| 1979 | 2 |
| 1981 | 2 |
| 1982 | 1 |
| 1983 | 1 |
| 1986 | 1 |
| 1989 | 5 |
| 1990 | 1 |
| 1991 | 1 |
| 1992 | 1 |
| 1994 | 4 |
| 1996 | 1 |
| 1998 | 2 |
| 2001 | 1 |
| 2011 | 2 |
| 2012 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 5 |
| 2024 | 2 |