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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1809 | 1 |
| 1846 | 1 |
| 1856 | 1 |
| 1861 | 1 |
| 1865 | 1 |
| 1869 | 1 |
| 1870 | 1 |
| 1873 | 2 |
| 1874 | 1 |
| 1877 | 2 |
| 1878 | 2 |
| 1889 | 1 |
| 1923 | 1 |
| 1924 | 1 |
| 1927 | 2 |
| 1928 | 2 |
| 1947 | 1 |
| 1994 | 1 |
| 1998 | 1 |
| 2004 | 1 |
| 2006 | 6 |
| 2007 | 4 |
| 2008 | 7 |
| 2009 | 5 |
| 2010 | 10 |
| 2011 | 11 |
| 2012 | 7 |
| 2013 | 17 |
| 2014 | 10 |
| 2015 | 12 |
| 2016 | 20 |
| 2017 | 20 |
| 2018 | 17 |
| 2019 | 26 |
| 2020 | 31 |
| 2021 | 31 |
| 2022 | 17 |
| 2023 | 6 |