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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1855 | 1 |
| 1859 | 1 |
| 1862 | 1 |
| 1864 | 1 |
| 1866 | 3 |
| 1870 | 3 |
| 1872 | 3 |
| 1873 | 2 |
| 1874 | 1 |
| 1882 | 1 |
| 1883 | 2 |
| 1884 | 3 |
| 1886 | 2 |
| 1888 | 2 |
| 1889 | 1 |
| 1893 | 2 |
| 1894 | 3 |
| 1895 | 4 |
| 1896 | 3 |
| 1897 | 4 |
| 1898 | 3 |
| 1899 | 1 |
| 1900 | 1 |
| 1901 | 1 |
| 1902 | 5 |
| 1903 | 4 |
| 1904 | 3 |
| 1906 | 2 |
| 1907 | 6 |
| 1908 | 5 |
| 1909 | 4 |
| 1911 | 1 |
| 1912 | 3 |
| 1913 | 4 |
| 1914 | 3 |
| 1915 | 3 |
| 1916 | 5 |
| 1917 | 4 |
| 1918 | 1 |
| 1919 | 8 |
| 1920 | 5 |
| 1922 | 3 |
| 1923 | 3 |
| 1924 | 1 |
| 1925 | 4 |
| 1926 | 3 |
| 1927 | 1 |
| 1928 | 1 |
| 1929 | 1 |
| 1930 | 3 |
| 1931 | 3 |
| 1932 | 1 |
| 1933 | 3 |
| 1934 | 2 |
| 1935 | 2 |
| 1936 | 5 |
| 1937 | 3 |
| 1938 | 6 |
| 1939 | 2 |
| 1940 | 3 |
| 1941 | 3 |
| 1942 | 6 |
| 1943 | 1 |
| 1944 | 2 |
| 1945 | 4 |
| 1946 | 16 |
| 1947 | 23 |
| 1948 | 28 |
| 1949 | 20 |
| 1950 | 25 |
| 1951 | 20 |
| 1952 | 27 |
| 1953 | 23 |
| 1954 | 18 |
| 1955 | 23 |
| 1956 | 21 |
| 1957 | 25 |
| 1958 | 38 |
| 1959 | 31 |
| 1960 | 29 |
| 1961 | 20 |
| 1962 | 35 |
| 1963 | 38 |
| 1964 | 47 |
| 1965 | 43 |
| 1966 | 52 |
| 1967 | 45 |
| 1968 | 49 |
| 1969 | 67 |
| 1970 | 63 |
| 1971 | 73 |
| 1972 | 70 |
| 1973 | 89 |
| 1974 | 95 |
| 1975 | 101 |
| 1976 | 91 |
| 1977 | 112 |
| 1978 | 116 |
| 1979 | 114 |
| 1980 | 120 |
| 1981 | 136 |
| 1982 | 162 |
| 1983 | 171 |
| 1984 | 173 |
| 1985 | 179 |
| 1986 | 164 |
| 1987 | 181 |
| 1988 | 198 |
| 1989 | 189 |
| 1990 | 196 |
| 1991 | 186 |
| 1992 | 245 |
| 1993 | 250 |
| 1994 | 232 |
| 1995 | 248 |
| 1996 | 272 |
| 1997 | 257 |
| 1998 | 292 |
| 1999 | 248 |
| 2000 | 271 |
| 2001 | 285 |
| 2002 | 304 |
| 2003 | 276 |
| 2004 | 269 |
| 2005 | 342 |
| 2006 | 375 |
| 2007 | 374 |
| 2008 | 397 |
| 2009 | 429 |
| 2010 | 416 |
| 2011 | 468 |
| 2012 | 449 |
| 2013 | 409 |
| 2014 | 470 |
| 2015 | 451 |
| 2016 | 480 |
| 2017 | 524 |
| 2018 | 462 |
| 2019 | 473 |
| 2020 | 486 |
| 2021 | 518 |
| 2022 | 512 |
| 2023 | 226 |