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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1948 | 1 |
| 1951 | 1 |
| 1952 | 1 |
| 1955 | 2 |
| 1956 | 1 |
| 1957 | 1 |
| 1959 | 1 |
| 1960 | 2 |
| 1961 | 3 |
| 1962 | 1 |
| 1963 | 2 |
| 1964 | 7 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 3 |
| 1968 | 3 |
| 1969 | 2 |
| 1970 | 4 |
| 1971 | 2 |
| 1972 | 2 |
| 1974 | 1 |
| 1980 | 1 |
| 1981 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1990 | 1 |
| 1996 | 1 |
| 2006 | 1 |
| 2007 | 3 |
| 2010 | 3 |
| 2011 | 4 |
| 2012 | 8 |
| 2013 | 6 |
| 2014 | 4 |
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 2 |
| 2021 | 2 |
| 2025 | 0 |