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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1870 | 1 |
| 1902 | 1 |
| 1903 | 1 |
| 1906 | 1 |
| 1952 | 2 |
| 1956 | 1 |
| 1965 | 1 |
| 1967 | 1 |
| 1970 | 3 |
| 1971 | 2 |
| 1972 | 1 |
| 1979 | 1 |
| 1981 | 3 |
| 1982 | 2 |
| 1983 | 7 |
| 1984 | 2 |
| 1985 | 4 |
| 1986 | 4 |
| 1987 | 2 |
| 1988 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2003 | 2 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 1 |
| 2010 | 2 |
| 2011 | 2 |
| 2012 | 3 |
| 2013 | 3 |
| 2014 | 3 |
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 3 |
| 2019 | 1 |
| 2020 | 1 |
| 2023 | 0 |