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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1967 | 1 |
| 1977 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1986 | 1 |
| 1989 | 1 |
| 1990 | 3 |
| 1991 | 2 |
| 1997 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2008 | 1 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 2 |
| 2020 | 1 |
| 2025 | 0 |