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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1858 | 1 |
| 1865 | 1 |
| 1866 | 3 |
| 1874 | 1 |
| 1875 | 1 |
| 1876 | 1 |
| 1877 | 2 |
| 1882 | 1 |
| 1885 | 1 |
| 1888 | 2 |
| 1938 | 1 |
| 1948 | 1 |
| 1949 | 4 |
| 1951 | 1 |
| 1952 | 2 |
| 1954 | 1 |
| 1959 | 1 |
| 1962 | 1 |
| 1964 | 1 |
| 1968 | 1 |
| 1971 | 4 |
| 1972 | 1 |
| 1978 | 1 |
| 1985 | 2 |
| 1986 | 2 |
| 1987 | 1 |
| 1988 | 1 |
| 1992 | 1 |
| 1997 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 4 |
| 2008 | 1 |
| 2009 | 2 |
| 2010 | 2 |
| 2011 | 1 |
| 2012 | 1 |
| 2013 | 5 |
| 2014 | 4 |
| 2015 | 2 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 10 |
| 2023 | 4 |