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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1846 | 1 |
| 1853 | 1 |
| 1857 | 1 |
| 1858 | 2 |
| 1859 | 1 |
| 1860 | 9 |
| 1861 | 11 |
| 1862 | 6 |
| 1863 | 9 |
| 1864 | 5 |
| 1865 | 4 |
| 1866 | 3 |
| 1867 | 12 |
| 1868 | 5 |
| 1869 | 7 |
| 1870 | 1 |
| 1871 | 5 |
| 1872 | 6 |
| 1873 | 5 |
| 1874 | 2 |
| 1875 | 1 |
| 1876 | 9 |
| 1877 | 4 |
| 1878 | 4 |
| 1879 | 5 |
| 1880 | 3 |
| 1881 | 1 |
| 1882 | 4 |
| 1883 | 1 |
| 1884 | 2 |
| 1886 | 1 |
| 1887 | 3 |
| 1889 | 2 |
| 1893 | 1 |
| 1899 | 1 |
| 1901 | 2 |
| 1903 | 1 |
| 1905 | 2 |
| 1906 | 2 |
| 1907 | 1 |
| 1908 | 2 |
| 1909 | 1 |
| 1910 | 1 |
| 1918 | 1 |
| 1924 | 1 |
| 1926 | 1 |
| 1927 | 1 |
| 1928 | 3 |
| 1930 | 3 |
| 1932 | 2 |
| 1933 | 1 |
| 1935 | 1 |
| 1937 | 1 |
| 1940 | 1 |
| 1942 | 1 |
| 1945 | 1 |
| 1946 | 3 |
| 1947 | 1 |
| 1948 | 2 |
| 1949 | 1 |
| 1950 | 4 |
| 1951 | 2 |
| 1952 | 4 |
| 1953 | 1 |
| 1955 | 1 |
| 1957 | 4 |
| 1958 | 2 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 2 |
| 1962 | 1 |
| 1963 | 4 |
| 1964 | 7 |
| 1965 | 1 |
| 1966 | 3 |
| 1967 | 2 |
| 1968 | 4 |
| 1969 | 5 |
| 1970 | 7 |
| 1971 | 6 |
| 1972 | 11 |
| 1973 | 9 |
| 1974 | 12 |
| 1975 | 6 |
| 1976 | 4 |
| 1977 | 6 |
| 1978 | 2 |
| 1979 | 2 |
| 1980 | 3 |
| 1981 | 5 |
| 1982 | 8 |
| 1983 | 3 |
| 1984 | 2 |
| 1986 | 4 |
| 1987 | 2 |
| 1988 | 4 |
| 1989 | 4 |
| 1990 | 3 |
| 1991 | 5 |
| 1992 | 4 |
| 1993 | 7 |
| 1994 | 4 |
| 1995 | 5 |
| 1996 | 4 |
| 1997 | 2 |
| 1998 | 3 |
| 1999 | 7 |
| 2000 | 6 |
| 2001 | 7 |
| 2002 | 6 |
| 2003 | 7 |
| 2004 | 10 |
| 2005 | 10 |
| 2006 | 10 |
| 2007 | 14 |
| 2008 | 17 |
| 2009 | 12 |
| 2010 | 9 |
| 2011 | 8 |
| 2012 | 18 |
| 2013 | 22 |
| 2014 | 19 |
| 2015 | 19 |
| 2016 | 26 |
| 2017 | 29 |
| 2018 | 30 |
| 2019 | 38 |
| 2020 | 37 |
| 2021 | 34 |
| 2022 | 31 |
| 2023 | 42 |
| 2024 | 15 |