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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1843 | 1 |
| 1859 | 7 |
| 1860 | 1 |
| 1862 | 3 |
| 1868 | 2 |
| 1873 | 2 |
| 1875 | 2 |
| 1876 | 1 |
| 1878 | 1 |
| 1879 | 1 |
| 1881 | 3 |
| 1882 | 1 |
| 1883 | 4 |
| 1884 | 1 |
| 1886 | 1 |
| 1892 | 1 |
| 1895 | 3 |
| 1896 | 9 |
| 1897 | 2 |
| 1899 | 2 |
| 1900 | 2 |
| 1901 | 2 |
| 1902 | 1 |
| 1903 | 1 |
| 1904 | 1 |
| 1907 | 1 |
| 1908 | 1 |
| 1912 | 2 |
| 1914 | 1 |
| 1915 | 2 |
| 1916 | 3 |
| 1917 | 2 |
| 1918 | 2 |
| 1921 | 1 |
| 1922 | 2 |
| 1923 | 1 |
| 1924 | 4 |
| 1925 | 7 |
| 1926 | 7 |
| 1927 | 3 |
| 1928 | 3 |
| 1929 | 1 |
| 1930 | 3 |
| 1932 | 4 |
| 1933 | 1 |
| 1934 | 3 |
| 1936 | 2 |
| 1937 | 2 |
| 1938 | 1 |
| 1939 | 3 |
| 1940 | 3 |
| 1941 | 3 |
| 1942 | 1 |
| 1943 | 2 |
| 1944 | 2 |
| 1945 | 2 |
| 1946 | 15 |
| 1947 | 12 |
| 1948 | 8 |
| 1949 | 14 |
| 1950 | 18 |
| 1951 | 27 |
| 1952 | 19 |
| 1953 | 10 |
| 1954 | 19 |
| 1955 | 16 |
| 1956 | 12 |
| 1957 | 13 |
| 1958 | 12 |
| 1959 | 14 |
| 1960 | 8 |
| 1961 | 7 |
| 1962 | 14 |
| 1963 | 32 |
| 1964 | 18 |
| 1965 | 34 |
| 1966 | 24 |
| 1967 | 43 |
| 1968 | 29 |
| 1969 | 42 |
| 1970 | 30 |
| 1971 | 58 |
| 1972 | 60 |
| 1973 | 44 |
| 1974 | 72 |
| 1975 | 105 |
| 1976 | 82 |
| 1977 | 79 |
| 1978 | 94 |
| 1979 | 86 |
| 1980 | 86 |
| 1981 | 101 |
| 1982 | 111 |
| 1983 | 130 |
| 1984 | 157 |
| 1985 | 153 |
| 1986 | 183 |
| 1987 | 222 |
| 1988 | 193 |
| 1989 | 239 |
| 1990 | 208 |
| 1991 | 255 |
| 1992 | 232 |
| 1993 | 277 |
| 1994 | 256 |
| 1995 | 280 |
| 1996 | 303 |
| 1997 | 296 |
| 1998 | 289 |
| 1999 | 319 |
| 2000 | 293 |
| 2001 | 323 |
| 2002 | 375 |
| 2003 | 369 |
| 2004 | 462 |
| 2005 | 434 |
| 2006 | 513 |
| 2007 | 556 |
| 2008 | 570 |
| 2009 | 601 |
| 2010 | 561 |
| 2011 | 646 |
| 2012 | 686 |
| 2013 | 739 |
| 2014 | 756 |
| 2015 | 818 |
| 2016 | 904 |
| 2017 | 854 |
| 2018 | 913 |
| 2019 | 855 |
| 2020 | 970 |
| 2021 | 1070 |
| 2022 | 899 |
| 2023 | 735 |