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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1877 | 1 |
| 1878 | 1 |
| 1879 | 3 |
| 1880 | 3 |
| 1881 | 3 |
| 1882 | 1 |
| 1883 | 1 |
| 1884 | 2 |
| 1885 | 1 |
| 1887 | 1 |
| 1888 | 1 |
| 1933 | 1 |
| 1946 | 3 |
| 1947 | 1 |
| 1948 | 1 |
| 1965 | 1 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 5 |
| 1973 | 12 |
| 1974 | 5 |
| 1975 | 2 |
| 1976 | 2 |
| 1977 | 1 |
| 1979 | 1 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 5 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 1 |
| 1986 | 4 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 1 |
| 1991 | 3 |
| 1992 | 1 |
| 1996 | 2 |
| 1998 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2007 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |