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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1856 | 1 |
| 1862 | 2 |
| 1866 | 3 |
| 1867 | 4 |
| 1876 | 2 |
| 1879 | 1 |
| 1881 | 1 |
| 1882 | 2 |
| 1883 | 3 |
| 1884 | 3 |
| 1885 | 3 |
| 1886 | 1 |
| 1887 | 11 |
| 1888 | 2 |
| 1889 | 2 |
| 1890 | 3 |
| 1892 | 3 |
| 1894 | 1 |
| 1895 | 1 |
| 1896 | 1 |
| 1897 | 1 |
| 1901 | 2 |
| 1904 | 1 |
| 1905 | 1 |
| 1910 | 1 |
| 1911 | 1 |
| 1912 | 2 |
| 1913 | 1 |
| 1915 | 1 |
| 1916 | 1 |
| 1917 | 1 |
| 1919 | 1 |
| 1920 | 3 |
| 1921 | 3 |
| 1922 | 1 |
| 1923 | 7 |
| 1924 | 2 |
| 1925 | 1 |
| 1926 | 4 |
| 1927 | 6 |
| 1928 | 5 |
| 1929 | 4 |
| 1930 | 4 |
| 1931 | 1 |
| 1932 | 4 |
| 1933 | 4 |
| 1934 | 6 |
| 1935 | 3 |
| 1936 | 1 |
| 1937 | 6 |
| 1938 | 6 |
| 1939 | 1 |
| 1940 | 2 |
| 1942 | 1 |
| 1945 | 2 |
| 1946 | 5 |
| 1947 | 5 |
| 1948 | 8 |
| 1949 | 7 |
| 1950 | 11 |
| 1951 | 5 |
| 1952 | 2 |
| 1953 | 3 |
| 1955 | 3 |
| 1956 | 7 |
| 1957 | 6 |
| 1958 | 5 |
| 1959 | 6 |
| 1960 | 8 |
| 1961 | 8 |
| 1962 | 5 |
| 1963 | 9 |
| 1964 | 13 |
| 1965 | 9 |
| 1966 | 16 |
| 1967 | 16 |
| 1968 | 15 |
| 1969 | 16 |
| 1970 | 18 |
| 1971 | 13 |
| 1972 | 24 |
| 1973 | 33 |
| 1974 | 19 |
| 1975 | 23 |
| 1976 | 28 |
| 1977 | 27 |
| 1978 | 31 |
| 1979 | 30 |
| 1980 | 26 |
| 1981 | 51 |
| 1982 | 50 |
| 1983 | 59 |
| 1984 | 43 |
| 1985 | 59 |
| 1986 | 65 |
| 1987 | 58 |
| 1988 | 43 |
| 1989 | 51 |
| 1990 | 70 |
| 1991 | 83 |
| 1992 | 75 |
| 1993 | 76 |
| 1994 | 86 |
| 1995 | 86 |
| 1996 | 94 |
| 1997 | 98 |
| 1998 | 90 |
| 1999 | 106 |
| 2000 | 109 |
| 2001 | 157 |
| 2002 | 133 |
| 2003 | 157 |
| 2004 | 156 |
| 2005 | 207 |
| 2006 | 199 |
| 2007 | 218 |
| 2008 | 203 |
| 2009 | 243 |
| 2010 | 278 |
| 2011 | 328 |
| 2012 | 338 |
| 2013 | 318 |
| 2014 | 305 |
| 2015 | 359 |
| 2016 | 344 |
| 2017 | 340 |
| 2018 | 375 |
| 2019 | 319 |
| 2020 | 318 |
| 2021 | 388 |
| 2022 | 386 |
| 2023 | 303 |