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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 4 |
| 1953 | 3 |
| 1954 | 4 |
| 1955 | 8 |
| 1956 | 5 |
| 1957 | 3 |
| 1958 | 4 |
| 1959 | 3 |
| 1960 | 2 |
| 1962 | 4 |
| 1963 | 7 |
| 1964 | 5 |
| 1965 | 5 |
| 1966 | 7 |
| 1967 | 3 |
| 1968 | 1 |
| 1970 | 4 |
| 1973 | 2 |
| 1974 | 3 |
| 1975 | 3 |
| 1976 | 4 |
| 1977 | 6 |
| 1980 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1991 | 1 |
| 1995 | 1 |
| 1997 | 1 |
| 1998 | 1 |
| 1999 | 3 |
| 2000 | 1 |
| 2002 | 1 |
| 2007 | 1 |
| 2008 | 1 |
| 2013 | 1 |
| 2020 | 1 |
| 2022 | 2 |
| 2024 | 1 |