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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1841 | 1 |
| 1843 | 1 |
| 1844 | 3 |
| 1846 | 3 |
| 1847 | 2 |
| 1848 | 2 |
| 1851 | 4 |
| 1852 | 1 |
| 1855 | 3 |
| 1856 | 1 |
| 1857 | 1 |
| 1862 | 1 |
| 1863 | 1 |
| 1878 | 1 |
| 1937 | 1 |
| 1942 | 1 |
| 1947 | 2 |
| 1952 | 1 |
| 1957 | 1 |
| 1958 | 1 |
| 1968 | 1 |
| 1977 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 1 |
| 1990 | 1 |
| 1992 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1997 | 1 |
| 1999 | 2 |
| 2000 | 2 |
| 2001 | 4 |
| 2002 | 2 |
| 2003 | 1 |
| 2005 | 1 |
| 2007 | 4 |
| 2008 | 3 |
| 2009 | 3 |
| 2010 | 4 |
| 2011 | 4 |
| 2012 | 3 |
| 2013 | 4 |
| 2014 | 3 |
| 2015 | 1 |
| 2016 | 9 |
| 2017 | 13 |
| 2018 | 12 |
| 2019 | 8 |
| 2020 | 14 |
| 2021 | 10 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 5 |