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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1857 | 1 |
| 1858 | 1 |
| 1865 | 3 |
| 1867 | 2 |
| 1868 | 5 |
| 1869 | 4 |
| 1870 | 1 |
| 1871 | 3 |
| 1872 | 1 |
| 1873 | 4 |
| 1875 | 2 |
| 1876 | 1 |
| 1878 | 3 |
| 1879 | 6 |
| 1880 | 1 |
| 1886 | 1 |
| 1888 | 1 |
| 1913 | 1 |
| 1920 | 1 |
| 1945 | 1 |
| 1946 | 2 |
| 1959 | 1 |
| 1960 | 1 |
| 1961 | 3 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 2 |
| 1973 | 2 |
| 1974 | 2 |
| 1975 | 11 |
| 1976 | 3 |
| 1977 | 7 |
| 1978 | 6 |
| 1979 | 4 |
| 1980 | 7 |
| 1981 | 5 |
| 1982 | 5 |
| 1983 | 10 |
| 1984 | 4 |
| 1985 | 2 |
| 1986 | 7 |
| 1987 | 7 |
| 1988 | 3 |
| 1989 | 7 |
| 1990 | 7 |
| 1991 | 4 |
| 1992 | 2 |
| 1993 | 2 |
| 1994 | 2 |
| 1995 | 2 |
| 1997 | 4 |
| 1998 | 1 |
| 2000 | 1 |
| 2002 | 2 |
| 2003 | 1 |
| 2004 | 1 |
| 2007 | 1 |
| 2008 | 3 |
| 2009 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |