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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1819 | 1 |
| 1821 | 2 |
| 1822 | 1 |
| 1823 | 1 |
| 1840 | 3 |
| 1841 | 2 |
| 1842 | 2 |
| 1851 | 1 |
| 1855 | 1 |
| 1856 | 5 |
| 1862 | 1 |
| 1863 | 2 |
| 1865 | 2 |
| 1866 | 1 |
| 1867 | 4 |
| 1868 | 3 |
| 1869 | 3 |
| 1870 | 2 |
| 1871 | 1 |
| 1873 | 1 |
| 1875 | 1 |
| 1877 | 2 |
| 1878 | 1 |
| 1879 | 2 |
| 1880 | 2 |
| 1881 | 1 |
| 1882 | 1 |
| 1883 | 3 |
| 1884 | 1 |
| 1885 | 1 |
| 1887 | 1 |
| 1888 | 2 |
| 1889 | 1 |
| 1892 | 1 |
| 1893 | 10 |
| 1894 | 2 |
| 1895 | 2 |
| 1896 | 1 |
| 1897 | 1 |
| 1898 | 4 |
| 1900 | 2 |
| 1901 | 1 |
| 1903 | 1 |
| 1904 | 1 |
| 1905 | 3 |
| 1908 | 2 |
| 1909 | 4 |
| 1910 | 1 |
| 1912 | 1 |
| 1913 | 1 |
| 1915 | 1 |
| 1916 | 2 |
| 1917 | 1 |
| 1918 | 6 |
| 1919 | 3 |
| 1920 | 1 |
| 1921 | 2 |
| 1923 | 1 |
| 1924 | 2 |
| 1926 | 1 |
| 1927 | 5 |
| 1928 | 2 |
| 1929 | 4 |
| 1930 | 2 |
| 1931 | 4 |
| 1932 | 3 |
| 1933 | 4 |
| 1934 | 6 |
| 1935 | 2 |
| 1936 | 6 |
| 1937 | 7 |
| 1938 | 2 |
| 1940 | 2 |
| 1941 | 8 |
| 1943 | 2 |
| 1945 | 5 |
| 1946 | 24 |
| 1947 | 23 |
| 1948 | 24 |
| 1949 | 38 |
| 1950 | 29 |
| 1951 | 29 |
| 1952 | 33 |
| 1953 | 38 |
| 1954 | 34 |
| 1955 | 39 |
| 1956 | 35 |
| 1957 | 37 |
| 1958 | 39 |
| 1959 | 47 |
| 1960 | 36 |
| 1961 | 20 |
| 1962 | 64 |
| 1963 | 52 |
| 1964 | 50 |
| 1965 | 53 |
| 1966 | 63 |
| 1967 | 58 |
| 1968 | 68 |
| 1969 | 81 |
| 1970 | 72 |
| 1971 | 92 |
| 1972 | 101 |
| 1973 | 118 |
| 1974 | 121 |
| 1975 | 138 |
| 1976 | 114 |
| 1977 | 145 |
| 1978 | 120 |
| 1979 | 168 |
| 1980 | 130 |
| 1981 | 139 |
| 1982 | 158 |
| 1983 | 183 |
| 1984 | 182 |
| 1985 | 208 |
| 1986 | 230 |
| 1987 | 223 |
| 1988 | 218 |
| 1989 | 206 |
| 1990 | 225 |
| 1991 | 250 |
| 1992 | 265 |
| 1993 | 249 |
| 1994 | 264 |
| 1995 | 277 |
| 1996 | 311 |
| 1997 | 291 |
| 1998 | 305 |
| 1999 | 302 |
| 2000 | 358 |
| 2001 | 402 |
| 2002 | 406 |
| 2003 | 437 |
| 2004 | 467 |
| 2005 | 565 |
| 2006 | 507 |
| 2007 | 572 |
| 2008 | 595 |
| 2009 | 659 |
| 2010 | 660 |
| 2011 | 780 |
| 2012 | 817 |
| 2013 | 831 |
| 2014 | 885 |
| 2015 | 920 |
| 2016 | 952 |
| 2017 | 1013 |
| 2018 | 1008 |
| 2019 | 1064 |
| 2020 | 1187 |
| 2021 | 1304 |
| 2022 | 1273 |
| 2023 | 897 |