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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1849 | 1 |
| 1850 | 1 |
| 1851 | 1 |
| 1852 | 1 |
| 1857 | 2 |
| 1858 | 2 |
| 1859 | 4 |
| 1860 | 3 |
| 1880 | 1 |
| 1891 | 1 |
| 1895 | 1 |
| 1898 | 1 |
| 1903 | 1 |
| 1950 | 1 |
| 1953 | 2 |
| 1956 | 2 |
| 1958 | 1 |
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 2 |
| 1966 | 2 |
| 1967 | 1 |
| 1970 | 3 |
| 1971 | 4 |
| 1972 | 1 |
| 1973 | 2 |
| 1975 | 3 |
| 1976 | 1 |
| 1977 | 2 |
| 1978 | 1 |
| 1979 | 2 |
| 1980 | 2 |
| 1981 | 1 |
| 1988 | 1 |
| 1992 | 2 |
| 1994 | 2 |
| 2000 | 1 |
| 2004 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2009 | 2 |
| 2010 | 3 |
| 2011 | 2 |
| 2012 | 3 |
| 2013 | 3 |
| 2014 | 2 |
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 5 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 2 |