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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1949 | 1 |
| 1951 | 4 |
| 1952 | 1 |
| 1954 | 1 |
| 1955 | 2 |
| 1956 | 3 |
| 1958 | 1 |
| 1959 | 1 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 2 |
| 1963 | 2 |
| 1967 | 1 |
| 1968 | 2 |
| 1971 | 1 |
| 1972 | 2 |
| 1973 | 4 |
| 1975 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 3 |
| 1980 | 2 |
| 1981 | 2 |
| 1983 | 2 |
| 1984 | 1 |
| 1986 | 2 |
| 1989 | 1 |
| 1990 | 2 |
| 1993 | 4 |
| 1997 | 2 |
| 1999 | 1 |
| 2011 | 2 |
| 2012 | 1 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 2 |
| 2025 | 0 |