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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1816 | 1 |
| 1822 | 1 |
| 1836 | 1 |
| 1837 | 1 |
| 1839 | 1 |
| 1840 | 2 |
| 1842 | 2 |
| 1843 | 6 |
| 1844 | 4 |
| 1845 | 5 |
| 1846 | 4 |
| 1847 | 2 |
| 1848 | 3 |
| 1849 | 6 |
| 1850 | 5 |
| 1851 | 7 |
| 1852 | 12 |
| 1853 | 8 |
| 1854 | 2 |
| 1855 | 4 |
| 1856 | 2 |
| 1857 | 7 |
| 1858 | 4 |
| 1859 | 5 |
| 1860 | 5 |
| 1861 | 2 |
| 1862 | 4 |
| 1863 | 1 |
| 1864 | 4 |
| 1866 | 1 |
| 1867 | 7 |
| 1868 | 15 |
| 1869 | 14 |
| 1870 | 9 |
| 1871 | 10 |
| 1872 | 9 |
| 1873 | 10 |
| 1874 | 12 |
| 1875 | 10 |
| 1876 | 4 |
| 1877 | 8 |
| 1878 | 7 |
| 1879 | 4 |
| 1880 | 23 |
| 1881 | 33 |
| 1882 | 10 |
| 1883 | 9 |
| 1884 | 11 |
| 1885 | 9 |
| 1886 | 4 |
| 1887 | 11 |
| 1888 | 16 |
| 1889 | 6 |
| 1890 | 6 |
| 1891 | 20 |
| 1892 | 8 |
| 1893 | 9 |
| 1894 | 5 |
| 1895 | 5 |
| 1896 | 5 |
| 1897 | 8 |
| 1898 | 4 |
| 1899 | 7 |
| 1900 | 5 |
| 1901 | 4 |
| 1902 | 7 |
| 1903 | 3 |
| 1904 | 4 |
| 1905 | 6 |
| 1906 | 6 |
| 1907 | 12 |
| 1908 | 17 |
| 1909 | 13 |
| 1910 | 9 |
| 1911 | 7 |
| 1912 | 15 |
| 1913 | 12 |
| 1914 | 10 |
| 1915 | 13 |
| 1916 | 12 |
| 1917 | 10 |
| 1918 | 10 |
| 1919 | 8 |
| 1920 | 8 |
| 1921 | 12 |
| 1922 | 14 |
| 1923 | 9 |
| 1924 | 16 |
| 1925 | 18 |
| 1926 | 13 |
| 1927 | 16 |
| 1928 | 15 |
| 1929 | 14 |
| 1930 | 14 |
| 1931 | 18 |
| 1932 | 16 |
| 1933 | 14 |
| 1934 | 11 |
| 1935 | 14 |
| 1936 | 18 |
| 1937 | 10 |
| 1938 | 6 |
| 1939 | 10 |
| 1940 | 13 |
| 1941 | 17 |
| 1942 | 13 |
| 1943 | 17 |
| 1944 | 9 |
| 1945 | 46 |
| 1946 | 117 |
| 1947 | 205 |
| 1948 | 246 |
| 1949 | 221 |
| 1950 | 317 |
| 1951 | 345 |
| 1952 | 368 |
| 1953 | 458 |
| 1954 | 501 |
| 1955 | 556 |
| 1956 | 593 |
| 1957 | 570 |
| 1958 | 683 |
| 1959 | 606 |
| 1960 | 659 |
| 1961 | 819 |
| 1962 | 1009 |
| 1963 | 1755 |
| 1964 | 3056 |
| 1965 | 3632 |
| 1966 | 4319 |
| 1967 | 5245 |
| 1968 | 6159 |
| 1969 | 6994 |
| 1970 | 7564 |
| 1971 | 8407 |
| 1972 | 9128 |
| 1973 | 9533 |
| 1974 | 9900 |
| 1975 | 7928 |
| 1976 | 6831 |
| 1977 | 7483 |
| 1978 | 7113 |
| 1979 | 7893 |
| 1980 | 9187 |
| 1981 | 9986 |
| 1982 | 10335 |
| 1983 | 10978 |
| 1984 | 11536 |
| 1985 | 11851 |
| 1986 | 12091 |
| 1987 | 12042 |
| 1988 | 12456 |
| 1989 | 13563 |
| 1990 | 13176 |
| 1991 | 13443 |
| 1992 | 13267 |
| 1993 | 13114 |
| 1994 | 13197 |
| 1995 | 13824 |
| 1996 | 13992 |
| 1997 | 14289 |
| 1998 | 15216 |
| 1999 | 15696 |
| 2000 | 17361 |
| 2001 | 18657 |
| 2002 | 19577 |
| 2003 | 21017 |
| 2004 | 23684 |
| 2005 | 26427 |
| 2006 | 27744 |
| 2007 | 29619 |
| 2008 | 32204 |
| 2009 | 33842 |
| 2010 | 37546 |
| 2011 | 39800 |
| 2012 | 40975 |
| 2013 | 43671 |
| 2014 | 44692 |
| 2015 | 45489 |
| 2016 | 45085 |
| 2017 | 44667 |
| 2018 | 45606 |
| 2019 | 47404 |
| 2020 | 50117 |
| 2021 | 50677 |
| 2022 | 47822 |
| 2023 | 45930 |
| 2024 | 47435 |
| 2025 | 47171 |
| 2026 | 757 |