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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1873 | 1 |
| 1888 | 1 |
| 1898 | 1 |
| 1947 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1978 | 1 |
| 1981 | 1 |
| 1983 | 2 |
| 1984 | 3 |
| 1987 | 2 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 2 |
| 1992 | 2 |
| 1994 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2007 | 5 |
| 2008 | 4 |
| 2009 | 3 |
| 2010 | 7 |
| 2011 | 4 |
| 2012 | 9 |
| 2013 | 5 |
| 2014 | 9 |
| 2015 | 14 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 5 |
| 2022 | 7 |