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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1950 | 1 |
| 1952 | 1 |
| 1955 | 2 |
| 1957 | 1 |
| 1959 | 1 |
| 1965 | 1 |
| 1968 | 4 |
| 1970 | 1 |
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 1 |
| 1977 | 1 |
| 1980 | 2 |
| 1981 | 1 |
| 1983 | 1 |
| 1984 | 1 |
| 1987 | 1 |
| 1991 | 2 |
| 1993 | 1 |
| 1994 | 1 |
| 1997 | 1 |
| 1999 | 3 |
| 2007 | 1 |
| 2008 | 1 |
| 2010 | 2 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2016 | 1 |
| 2025 | 0 |