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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1790 | 1 |
| 1812 | 1 |
| 1832 | 1 |
| 1838 | 16 |
| 1839 | 22 |
| 1840 | 85 |
| 1841 | 98 |
| 1842 | 85 |
| 1843 | 73 |
| 1844 | 90 |
| 1845 | 123 |
| 1846 | 86 |
| 1847 | 114 |
| 1848 | 131 |
| 1849 | 149 |
| 1850 | 168 |
| 1851 | 114 |
| 1852 | 149 |
| 1853 | 125 |
| 1854 | 125 |
| 1855 | 122 |
| 1856 | 88 |
| 1857 | 77 |
| 1858 | 122 |
| 1859 | 132 |
| 1860 | 147 |
| 1861 | 127 |
| 1862 | 65 |
| 1863 | 57 |
| 1864 | 36 |
| 1865 | 38 |
| 1866 | 124 |
| 1867 | 187 |
| 1868 | 155 |
| 1869 | 163 |
| 1870 | 124 |
| 1871 | 175 |
| 1872 | 187 |
| 1873 | 203 |
| 1874 | 166 |
| 1875 | 124 |
| 1876 | 105 |
| 1877 | 178 |
| 1878 | 167 |
| 1879 | 128 |
| 1880 | 148 |
| 1881 | 286 |
| 1882 | 230 |
| 1883 | 260 |
| 1884 | 254 |
| 1885 | 259 |
| 1886 | 259 |
| 1887 | 266 |
| 1888 | 237 |
| 1889 | 270 |
| 1890 | 179 |
| 1891 | 203 |
| 1892 | 246 |
| 1893 | 220 |
| 1894 | 212 |
| 1895 | 220 |
| 1896 | 271 |
| 1897 | 269 |
| 1898 | 265 |
| 1899 | 269 |
| 1900 | 255 |
| 1901 | 187 |
| 1902 | 178 |
| 1903 | 222 |
| 1904 | 174 |
| 1905 | 164 |
| 1906 | 110 |
| 1907 | 118 |
| 1908 | 115 |
| 1909 | 88 |
| 1910 | 95 |
| 1911 | 132 |
| 1912 | 147 |
| 1913 | 206 |
| 1914 | 210 |
| 1915 | 170 |
| 1916 | 157 |
| 1917 | 110 |
| 1918 | 133 |
| 1919 | 89 |
| 1920 | 35 |
| 1921 | 53 |
| 1922 | 50 |
| 1923 | 45 |
| 1924 | 29 |
| 1925 | 25 |
| 1926 | 23 |
| 1927 | 31 |
| 1928 | 31 |
| 1929 | 25 |
| 1930 | 23 |
| 1931 | 28 |
| 1932 | 27 |
| 1933 | 22 |
| 1934 | 21 |
| 1935 | 24 |
| 1936 | 25 |
| 1937 | 22 |
| 1938 | 27 |
| 1939 | 22 |
| 1940 | 22 |
| 1941 | 27 |
| 1942 | 24 |
| 1943 | 18 |
| 1944 | 26 |
| 1945 | 22 |
| 1946 | 16 |
| 1947 | 22 |
| 1948 | 24 |
| 1949 | 23 |
| 1950 | 18 |
| 1951 | 19 |
| 1952 | 18 |
| 1953 | 18 |
| 1954 | 26 |
| 1955 | 12 |
| 1956 | 6 |
| 1957 | 3 |
| 1958 | 6 |
| 1959 | 5 |
| 1960 | 4 |
| 1961 | 5 |
| 1962 | 9 |
| 1963 | 10 |
| 1964 | 10 |
| 1965 | 13 |
| 1966 | 47 |
| 1967 | 66 |
| 1968 | 27 |
| 1969 | 16 |
| 1970 | 18 |
| 1971 | 32 |
| 1972 | 37 |
| 1973 | 113 |
| 1974 | 83 |
| 1975 | 373 |
| 1976 | 1441 |
| 1977 | 3178 |
| 1978 | 3366 |
| 1979 | 3365 |
| 1980 | 2614 |
| 1981 | 2196 |
| 1982 | 1921 |
| 1983 | 2204 |
| 1984 | 2280 |
| 1985 | 2402 |
| 1986 | 2830 |
| 1987 | 3258 |
| 1988 | 3320 |
| 1989 | 3799 |
| 1990 | 4921 |
| 1991 | 6597 |
| 1992 | 6989 |
| 1993 | 7387 |
| 1994 | 7620 |
| 1995 | 8069 |
| 1996 | 8438 |
| 1997 | 8700 |
| 1998 | 9113 |
| 1999 | 9790 |
| 2000 | 10535 |
| 2001 | 11195 |
| 2002 | 11773 |
| 2003 | 12878 |
| 2004 | 13494 |
| 2005 | 14620 |
| 2006 | 15196 |
| 2007 | 15922 |
| 2008 | 19710 |
| 2009 | 20482 |
| 2010 | 21230 |
| 2011 | 22371 |
| 2012 | 23455 |
| 2013 | 24564 |
| 2014 | 25774 |
| 2015 | 27773 |
| 2016 | 29435 |
| 2017 | 31759 |
| 2018 | 32781 |
| 2019 | 34147 |
| 2020 | 41308 |
| 2021 | 40753 |
| 2022 | 41243 |
| 2023 | 41432 |
| 2024 | 19885 |