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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 4 |
| 1949 | 1 |
| 1950 | 5 |
| 1951 | 3 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 2 |
| 1955 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 2 |
| 1961 | 6 |
| 1962 | 2 |
| 1963 | 8 |
| 1964 | 5 |
| 1965 | 4 |
| 1966 | 5 |
| 1967 | 11 |
| 1968 | 8 |
| 1969 | 6 |
| 1970 | 7 |
| 1971 | 7 |
| 1972 | 6 |
| 1974 | 5 |
| 1976 | 3 |
| 1977 | 6 |
| 1978 | 4 |
| 1979 | 5 |
| 1980 | 3 |
| 1991 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2025 | 0 |