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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1839 | 1 |
| 1871 | 1 |
| 1872 | 1 |
| 1874 | 1 |
| 1877 | 2 |
| 1889 | 3 |
| 1951 | 1 |
| 1961 | 1 |
| 1970 | 2 |
| 1976 | 1 |
| 1978 | 1 |
| 1979 | 2 |
| 1981 | 1 |
| 1985 | 1 |
| 1986 | 1 |
| 1991 | 2 |
| 1998 | 1 |
| 2000 | 2 |
| 2001 | 2 |
| 2003 | 2 |
| 2004 | 2 |
| 2005 | 2 |
| 2006 | 1 |
| 2007 | 3 |
| 2008 | 3 |
| 2009 | 5 |
| 2010 | 6 |
| 2011 | 5 |
| 2012 | 4 |
| 2013 | 5 |
| 2014 | 8 |
| 2015 | 9 |
| 2016 | 4 |
| 2017 | 9 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 17 |
| 2021 | 18 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 1 |