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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 2 |
| 1964 | 1 |
| 1985 | 2 |
| 1986 | 2 |
| 1988 | 5 |
| 1990 | 2 |
| 1991 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2002 | 2 |
| 2004 | 3 |
| 2006 | 2 |
| 2009 | 3 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2024 | 0 |