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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1816 | 1 |
| 1818 | 3 |
| 1819 | 1 |
| 1820 | 1 |
| 1822 | 1 |
| 1843 | 1 |
| 1844 | 1 |
| 1846 | 1 |
| 1855 | 1 |
| 1858 | 4 |
| 1859 | 3 |
| 1860 | 4 |
| 1861 | 1 |
| 1862 | 1 |
| 1864 | 1 |
| 1865 | 1 |
| 1866 | 4 |
| 1867 | 1 |
| 1871 | 1 |
| 1875 | 1 |
| 1876 | 1 |
| 1877 | 1 |
| 1882 | 1 |
| 1883 | 3 |
| 1885 | 1 |
| 1888 | 2 |
| 1890 | 1 |
| 1891 | 2 |
| 1892 | 5 |
| 1893 | 1 |
| 1894 | 1 |
| 1895 | 1 |
| 1896 | 4 |
| 1897 | 4 |
| 1898 | 1 |
| 1899 | 1 |
| 1900 | 1 |
| 1901 | 1 |
| 1902 | 1 |
| 1906 | 1 |
| 1907 | 2 |
| 1908 | 1 |
| 1909 | 1 |
| 1911 | 6 |
| 1912 | 1 |
| 1913 | 2 |
| 1915 | 1 |
| 1916 | 3 |
| 1917 | 1 |
| 1918 | 2 |
| 1919 | 1 |
| 1921 | 5 |
| 1922 | 4 |
| 1923 | 1 |
| 1924 | 2 |
| 1926 | 3 |
| 1928 | 1 |
| 1929 | 3 |
| 1930 | 1 |
| 1931 | 3 |
| 1934 | 4 |
| 1935 | 2 |
| 1937 | 1 |
| 1940 | 1 |
| 1943 | 1 |
| 1944 | 1 |
| 1945 | 1 |
| 1946 | 5 |
| 1947 | 10 |
| 1948 | 7 |
| 1949 | 4 |
| 1950 | 15 |
| 1951 | 5 |
| 1952 | 9 |
| 1953 | 11 |
| 1954 | 13 |
| 1955 | 11 |
| 1956 | 15 |
| 1957 | 20 |
| 1958 | 11 |
| 1959 | 13 |
| 1960 | 15 |
| 1961 | 13 |
| 1962 | 11 |
| 1963 | 20 |
| 1964 | 20 |
| 1965 | 16 |
| 1966 | 24 |
| 1967 | 22 |
| 1968 | 29 |
| 1969 | 34 |
| 1970 | 17 |
| 1971 | 27 |
| 1972 | 20 |
| 1973 | 20 |
| 1974 | 34 |
| 1975 | 23 |
| 1976 | 23 |
| 1977 | 36 |
| 1978 | 39 |
| 1979 | 36 |
| 1980 | 37 |
| 1981 | 37 |
| 1982 | 37 |
| 1983 | 41 |
| 1984 | 30 |
| 1985 | 33 |
| 1986 | 36 |
| 1987 | 29 |
| 1988 | 28 |
| 1989 | 53 |
| 1990 | 40 |
| 1991 | 31 |
| 1992 | 31 |
| 1993 | 26 |
| 1994 | 34 |
| 1995 | 26 |
| 1996 | 22 |
| 1997 | 29 |
| 1998 | 39 |
| 1999 | 26 |
| 2000 | 41 |
| 2001 | 37 |
| 2002 | 32 |
| 2003 | 34 |
| 2004 | 38 |
| 2005 | 50 |
| 2006 | 67 |
| 2007 | 53 |
| 2008 | 66 |
| 2009 | 72 |
| 2010 | 72 |
| 2011 | 71 |
| 2012 | 68 |
| 2013 | 66 |
| 2014 | 77 |
| 2015 | 82 |
| 2016 | 76 |
| 2017 | 89 |
| 2018 | 83 |
| 2019 | 93 |
| 2020 | 70 |
| 2021 | 75 |
| 2022 | 73 |
| 2023 | 66 |
| 2024 | 49 |
| 2025 | 54 |