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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1839 | 1 |
| 1857 | 1 |
| 1860 | 1 |
| 1868 | 1 |
| 1874 | 1 |
| 1881 | 1 |
| 1885 | 1 |
| 1902 | 4 |
| 1903 | 1 |
| 1906 | 1 |
| 1907 | 2 |
| 1909 | 1 |
| 1912 | 3 |
| 1913 | 1 |
| 1914 | 4 |
| 1915 | 3 |
| 1916 | 3 |
| 1917 | 3 |
| 1918 | 4 |
| 1919 | 5 |
| 1920 | 2 |
| 1921 | 2 |
| 1922 | 2 |
| 1923 | 2 |
| 1925 | 1 |
| 1926 | 1 |
| 1927 | 2 |
| 1928 | 4 |
| 1929 | 4 |
| 1930 | 8 |
| 1931 | 7 |
| 1932 | 2 |
| 1933 | 3 |
| 1934 | 6 |
| 1935 | 3 |
| 1936 | 4 |
| 1938 | 4 |
| 1939 | 1 |
| 1940 | 3 |
| 1941 | 4 |
| 1942 | 2 |
| 1943 | 2 |
| 1944 | 4 |
| 1945 | 6 |
| 1946 | 21 |
| 1947 | 19 |
| 1948 | 27 |
| 1949 | 16 |
| 1950 | 12 |
| 1951 | 16 |
| 1952 | 21 |
| 1953 | 21 |
| 1954 | 13 |
| 1955 | 17 |
| 1956 | 17 |
| 1957 | 14 |
| 1958 | 16 |
| 1959 | 19 |
| 1960 | 10 |
| 1961 | 21 |
| 1962 | 34 |
| 1963 | 39 |
| 1964 | 37 |
| 1965 | 36 |
| 1966 | 39 |
| 1967 | 37 |
| 1968 | 39 |
| 1969 | 45 |
| 1970 | 54 |
| 1971 | 48 |
| 1972 | 57 |
| 1973 | 53 |
| 1974 | 53 |
| 1975 | 52 |
| 1976 | 73 |
| 1977 | 68 |
| 1978 | 61 |
| 1979 | 78 |
| 1980 | 88 |
| 1981 | 89 |
| 1982 | 66 |
| 1983 | 61 |
| 1984 | 92 |
| 1985 | 88 |
| 1986 | 81 |
| 1987 | 121 |
| 1988 | 111 |
| 1989 | 113 |
| 1990 | 143 |
| 1991 | 130 |
| 1992 | 112 |
| 1993 | 121 |
| 1994 | 120 |
| 1995 | 124 |
| 1996 | 122 |
| 1997 | 124 |
| 1998 | 124 |
| 1999 | 152 |
| 2000 | 153 |
| 2001 | 158 |
| 2002 | 140 |
| 2003 | 153 |
| 2004 | 203 |
| 2005 | 225 |
| 2006 | 234 |
| 2007 | 255 |
| 2008 | 266 |
| 2009 | 283 |
| 2010 | 325 |
| 2011 | 367 |
| 2012 | 383 |
| 2013 | 417 |
| 2014 | 430 |
| 2015 | 507 |
| 2016 | 476 |
| 2017 | 541 |
| 2018 | 563 |
| 2019 | 569 |
| 2020 | 668 |
| 2021 | 733 |
| 2022 | 668 |
| 2023 | 674 |
| 2024 | 258 |