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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1951 | 2 |
| 1952 | 1 |
| 1955 | 3 |
| 1956 | 1 |
| 1959 | 1 |
| 1961 | 3 |
| 1962 | 1 |
| 1963 | 2 |
| 1964 | 3 |
| 1966 | 1 |
| 1967 | 4 |
| 1968 | 2 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 3 |
| 1972 | 3 |
| 1973 | 3 |
| 1974 | 3 |
| 1975 | 3 |
| 1976 | 7 |
| 1977 | 1 |
| 1978 | 3 |
| 1979 | 4 |
| 1980 | 3 |
| 1981 | 5 |
| 1982 | 2 |
| 1988 | 1 |
| 1997 | 1 |
| 2003 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2025 | 1 |