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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1951 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1957 | 1 |
| 1961 | 2 |
| 1962 | 3 |
| 1966 | 1 |
| 1967 | 1 |
| 1968 | 3 |
| 1971 | 3 |
| 1974 | 2 |
| 1975 | 2 |
| 1980 | 1 |
| 1982 | 2 |
| 1983 | 1 |
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 2 |
| 1993 | 1 |
| 1996 | 1 |
| 1998 | 3 |
| 2002 | 2 |
| 2003 | 3 |
| 2004 | 3 |
| 2005 | 1 |
| 2008 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2023 | 0 |