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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1820 | 1 |
| 1845 | 1 |
| 1851 | 1 |
| 1852 | 5 |
| 1853 | 6 |
| 1854 | 2 |
| 1855 | 9 |
| 1856 | 10 |
| 1857 | 27 |
| 1858 | 25 |
| 1859 | 16 |
| 1860 | 5 |
| 1861 | 12 |
| 1862 | 16 |
| 1863 | 6 |
| 1864 | 3 |
| 1865 | 4 |
| 1866 | 5 |
| 1867 | 2 |
| 1868 | 3 |
| 1869 | 2 |
| 1870 | 1 |
| 1872 | 1 |
| 1873 | 3 |
| 1874 | 1 |
| 1875 | 3 |
| 1876 | 2 |
| 1877 | 2 |
| 1878 | 2 |
| 1879 | 1 |
| 1880 | 1 |
| 1881 | 1 |
| 1882 | 2 |
| 1883 | 3 |
| 1884 | 3 |
| 1886 | 2 |
| 1887 | 9 |
| 1888 | 2 |
| 1889 | 2 |
| 1890 | 2 |
| 1892 | 3 |
| 1893 | 2 |
| 1894 | 2 |
| 1895 | 1 |
| 1896 | 4 |
| 1897 | 2 |
| 1898 | 2 |
| 1899 | 4 |
| 1900 | 1 |
| 1901 | 2 |
| 1902 | 5 |
| 1903 | 2 |
| 1904 | 1 |
| 1905 | 3 |
| 1906 | 5 |
| 1907 | 3 |
| 1908 | 6 |
| 1909 | 1 |
| 1910 | 2 |
| 1911 | 2 |
| 1912 | 2 |
| 1913 | 2 |
| 1914 | 5 |
| 1915 | 3 |
| 1916 | 7 |
| 1917 | 3 |
| 1919 | 2 |
| 1920 | 1 |
| 1921 | 8 |
| 1922 | 2 |
| 1923 | 3 |
| 1924 | 3 |
| 1925 | 1 |
| 1927 | 3 |
| 1928 | 1 |
| 1930 | 2 |
| 1931 | 1 |
| 1932 | 2 |
| 1933 | 1 |
| 1934 | 1 |
| 1936 | 3 |
| 1937 | 3 |
| 1938 | 1 |
| 1939 | 2 |
| 1941 | 2 |
| 1942 | 2 |
| 1943 | 1 |
| 1944 | 1 |
| 1945 | 4 |
| 1946 | 6 |
| 1947 | 3 |
| 1948 | 2 |
| 1949 | 5 |
| 1950 | 6 |
| 1951 | 6 |
| 1952 | 3 |
| 1953 | 4 |
| 1954 | 2 |
| 1955 | 4 |
| 1957 | 4 |
| 1958 | 3 |
| 1959 | 2 |
| 1960 | 4 |
| 1961 | 4 |
| 1962 | 2 |
| 1963 | 4 |
| 1964 | 1 |
| 1965 | 6 |
| 1966 | 4 |
| 1967 | 15 |
| 1968 | 11 |
| 1969 | 3 |
| 1970 | 7 |
| 1971 | 4 |
| 1972 | 2 |
| 1973 | 6 |
| 1974 | 5 |
| 1975 | 10 |
| 1976 | 12 |
| 1977 | 10 |
| 1978 | 16 |
| 1979 | 21 |
| 1980 | 10 |
| 1981 | 17 |
| 1982 | 11 |
| 1983 | 15 |
| 1984 | 14 |
| 1985 | 17 |
| 1986 | 32 |
| 1987 | 189 |
| 1988 | 378 |
| 1989 | 441 |
| 1990 | 427 |
| 1991 | 473 |
| 1992 | 520 |
| 1993 | 547 |
| 1994 | 508 |
| 1995 | 568 |
| 1996 | 542 |
| 1997 | 548 |
| 1998 | 489 |
| 1999 | 505 |
| 2000 | 504 |
| 2001 | 534 |
| 2002 | 548 |
| 2003 | 614 |
| 2004 | 676 |
| 2005 | 688 |
| 2006 | 742 |
| 2007 | 819 |
| 2008 | 855 |
| 2009 | 842 |
| 2010 | 881 |
| 2011 | 987 |
| 2012 | 1013 |
| 2013 | 1338 |
| 2014 | 1985 |
| 2015 | 2599 |
| 2016 | 2796 |
| 2017 | 2863 |
| 2018 | 2827 |
| 2019 | 3093 |
| 2020 | 3383 |
| 2021 | 3729 |
| 2022 | 3386 |
| 2023 | 3208 |
| 2024 | 3308 |
| 2025 | 3377 |
| 2026 | 28 |