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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1865 | 2 |
| 1872 | 1 |
| 1873 | 1 |
| 1874 | 2 |
| 1877 | 1 |
| 1886 | 1 |
| 1888 | 1 |
| 1889 | 1 |
| 1892 | 2 |
| 1895 | 2 |
| 1906 | 1 |
| 1909 | 2 |
| 1941 | 1 |
| 1946 | 2 |
| 1947 | 4 |
| 1949 | 1 |
| 1951 | 4 |
| 1952 | 4 |
| 1953 | 2 |
| 1954 | 1 |
| 1955 | 4 |
| 1956 | 3 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 2 |
| 1960 | 2 |
| 1961 | 2 |
| 1962 | 2 |
| 1963 | 3 |
| 1964 | 1 |
| 1966 | 1 |
| 1968 | 1 |
| 1970 | 2 |
| 1971 | 1 |
| 1972 | 1 |
| 1978 | 1 |
| 1980 | 2 |
| 1981 | 1 |
| 1985 | 3 |
| 1986 | 2 |
| 1988 | 2 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 7 |
| 1993 | 2 |
| 1995 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 2 |
| 2000 | 2 |
| 2004 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2012 | 2 |
| 2013 | 3 |
| 2014 | 3 |
| 2017 | 1 |
| 2018 | 3 |
| 2020 | 1 |
| 2022 | 3 |
| 2023 | 2 |