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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1806 | 1 |
| 1818 | 1 |
| 1826 | 1 |
| 1827 | 1 |
| 1831 | 4 |
| 1851 | 1 |
| 1854 | 1 |
| 1855 | 1 |
| 1861 | 1 |
| 1866 | 1 |
| 1867 | 2 |
| 1868 | 5 |
| 1869 | 3 |
| 1870 | 2 |
| 1871 | 2 |
| 1872 | 8 |
| 1873 | 1 |
| 1874 | 1 |
| 1876 | 1 |
| 1878 | 1 |
| 1880 | 1 |
| 1881 | 3 |
| 1882 | 4 |
| 1883 | 2 |
| 1885 | 3 |
| 1886 | 1 |
| 1887 | 4 |
| 1888 | 2 |
| 1889 | 2 |
| 1890 | 1 |
| 1893 | 2 |
| 1894 | 1 |
| 1895 | 3 |
| 1896 | 3 |
| 1897 | 4 |
| 1898 | 2 |
| 1901 | 2 |
| 1902 | 4 |
| 1903 | 3 |
| 1904 | 3 |
| 1905 | 1 |
| 1907 | 4 |
| 1908 | 1 |
| 1909 | 3 |
| 1910 | 2 |
| 1911 | 1 |
| 1912 | 5 |
| 1913 | 9 |
| 1914 | 4 |
| 1915 | 9 |
| 1916 | 9 |
| 1917 | 7 |
| 1918 | 2 |
| 1919 | 6 |
| 1920 | 4 |
| 1921 | 4 |
| 1922 | 1 |
| 1923 | 9 |
| 1924 | 7 |
| 1925 | 7 |
| 1926 | 7 |
| 1927 | 6 |
| 1928 | 6 |
| 1929 | 7 |
| 1930 | 11 |
| 1931 | 4 |
| 1932 | 10 |
| 1933 | 7 |
| 1934 | 8 |
| 1935 | 7 |
| 1936 | 1 |
| 1937 | 7 |
| 1938 | 14 |
| 1939 | 6 |
| 1940 | 4 |
| 1941 | 2 |
| 1942 | 2 |
| 1943 | 4 |
| 1944 | 8 |
| 1945 | 5 |
| 1946 | 31 |
| 1947 | 18 |
| 1948 | 27 |
| 1949 | 26 |
| 1950 | 28 |
| 1951 | 28 |
| 1952 | 37 |
| 1953 | 55 |
| 1954 | 45 |
| 1955 | 39 |
| 1956 | 39 |
| 1957 | 45 |
| 1958 | 40 |
| 1959 | 53 |
| 1960 | 54 |
| 1961 | 71 |
| 1962 | 50 |
| 1963 | 41 |
| 1964 | 73 |
| 1965 | 72 |
| 1966 | 76 |
| 1967 | 81 |
| 1968 | 110 |
| 1969 | 99 |
| 1970 | 111 |
| 1971 | 132 |
| 1972 | 129 |
| 1973 | 145 |
| 1974 | 138 |
| 1975 | 133 |
| 1976 | 149 |
| 1977 | 127 |
| 1978 | 148 |
| 1979 | 185 |
| 1980 | 168 |
| 1981 | 162 |
| 1982 | 161 |
| 1983 | 201 |
| 1984 | 156 |
| 1985 | 170 |
| 1986 | 168 |
| 1987 | 238 |
| 1988 | 198 |
| 1989 | 262 |
| 1990 | 229 |
| 1991 | 190 |
| 1992 | 216 |
| 1993 | 247 |
| 1994 | 253 |
| 1995 | 279 |
| 1996 | 287 |
| 1997 | 256 |
| 1998 | 285 |
| 1999 | 310 |
| 2000 | 362 |
| 2001 | 349 |
| 2002 | 352 |
| 2003 | 399 |
| 2004 | 437 |
| 2005 | 486 |
| 2006 | 498 |
| 2007 | 539 |
| 2008 | 542 |
| 2009 | 561 |
| 2010 | 643 |
| 2011 | 637 |
| 2012 | 640 |
| 2013 | 680 |
| 2014 | 710 |
| 2015 | 758 |
| 2016 | 750 |
| 2017 | 809 |
| 2018 | 837 |
| 2019 | 859 |
| 2020 | 953 |
| 2021 | 952 |
| 2022 | 901 |
| 2023 | 622 |