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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1929 | 2 |
| 1947 | 1 |
| 1948 | 1 |
| 1951 | 1 |
| 1955 | 1 |
| 1956 | 1 |
| 1958 | 1 |
| 1961 | 3 |
| 1962 | 6 |
| 1963 | 16 |
| 1964 | 12 |
| 1965 | 11 |
| 1966 | 13 |
| 1967 | 11 |
| 1968 | 12 |
| 1969 | 23 |
| 1970 | 25 |
| 1971 | 25 |
| 1972 | 33 |
| 1973 | 25 |
| 1974 | 16 |
| 1975 | 2 |
| 1976 | 1 |
| 1977 | 4 |
| 1978 | 5 |
| 1979 | 3 |
| 1980 | 3 |
| 1982 | 5 |
| 1983 | 1 |
| 1984 | 1 |
| 1986 | 2 |
| 1987 | 4 |
| 1990 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1998 | 1 |
| 2000 | 1 |
| 2005 | 1 |
| 2006 | 1 |
| 2007 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2013 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 0 |