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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1851 | 1 |
| 1855 | 3 |
| 1856 | 2 |
| 1864 | 1 |
| 1867 | 1 |
| 1868 | 2 |
| 1870 | 1 |
| 1871 | 1 |
| 1875 | 1 |
| 1876 | 3 |
| 1879 | 1 |
| 1880 | 2 |
| 1883 | 1 |
| 1889 | 1 |
| 1891 | 1 |
| 1896 | 3 |
| 1897 | 2 |
| 1899 | 1 |
| 1905 | 1 |
| 1946 | 1 |
| 1950 | 1 |
| 1951 | 1 |
| 1957 | 1 |
| 1965 | 1 |
| 1980 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1997 | 3 |
| 1998 | 3 |
| 1999 | 3 |
| 2000 | 4 |
| 2001 | 2 |
| 2002 | 6 |
| 2003 | 4 |
| 2004 | 12 |
| 2005 | 13 |
| 2006 | 12 |
| 2007 | 14 |
| 2008 | 21 |
| 2009 | 16 |
| 2010 | 27 |
| 2011 | 18 |
| 2012 | 16 |
| 2013 | 23 |
| 2014 | 13 |
| 2015 | 19 |
| 2016 | 27 |
| 2017 | 15 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 16 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 4 |