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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1952 | 1 |
| 1954 | 1 |
| 1955 | 1 |
| 1957 | 2 |
| 1959 | 1 |
| 1960 | 1 |
| 1963 | 1 |
| 1964 | 4 |
| 1965 | 6 |
| 1966 | 11 |
| 1967 | 36 |
| 1968 | 46 |
| 1969 | 31 |
| 1970 | 35 |
| 1971 | 32 |
| 1972 | 37 |
| 1973 | 21 |
| 1974 | 23 |
| 1975 | 17 |
| 1976 | 4 |
| 1977 | 8 |
| 1978 | 6 |
| 1979 | 2 |
| 1980 | 4 |
| 1981 | 2 |
| 1982 | 3 |
| 1983 | 2 |
| 1984 | 2 |
| 1985 | 3 |
| 1986 | 1 |
| 1987 | 2 |
| 1995 | 1 |
| 1997 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2002 | 2 |
| 2003 | 2 |
| 2004 | 1 |
| 2005 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2024 | 0 |