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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1848 | 2 |
| 1849 | 1 |
| 1850 | 1 |
| 1851 | 3 |
| 1852 | 1 |
| 1856 | 3 |
| 1968 | 1 |
| 1970 | 1 |
| 1971 | 2 |
| 1972 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1979 | 2 |
| 1981 | 2 |
| 1982 | 1 |
| 1986 | 2 |
| 1993 | 1 |
| 1997 | 3 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 2 |
| 2005 | 1 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 2 |
| 2010 | 1 |
| 2011 | 1 |
| 2013 | 1 |
| 2015 | 1 |
| 2017 | 1 |
| 2025 | 0 |