Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1796 | 1 |
| 1802 | 2 |
| 1804 | 1 |
| 1805 | 1 |
| 1807 | 1 |
| 1809 | 5 |
| 1812 | 4 |
| 1817 | 1 |
| 1818 | 1 |
| 1824 | 1 |
| 1827 | 1 |
| 1834 | 3 |
| 1835 | 2 |
| 1866 | 1 |
| 1867 | 2 |
| 1869 | 1 |
| 1873 | 1 |
| 1874 | 1 |
| 1876 | 2 |
| 1877 | 2 |
| 1879 | 1 |
| 1880 | 1 |
| 1881 | 3 |
| 1899 | 1 |
| 1902 | 1 |
| 1903 | 2 |
| 1905 | 1 |
| 1906 | 1 |
| 1907 | 1 |
| 1909 | 2 |
| 1912 | 1 |
| 1913 | 1 |
| 1915 | 1 |
| 1917 | 3 |
| 1919 | 1 |
| 1920 | 1 |
| 1922 | 2 |
| 1923 | 3 |
| 1924 | 2 |
| 1925 | 2 |
| 1929 | 1 |
| 1930 | 1 |
| 1931 | 5 |
| 1932 | 3 |
| 1933 | 3 |
| 1935 | 2 |
| 1937 | 2 |
| 1938 | 1 |
| 1939 | 1 |
| 1940 | 1 |
| 1941 | 5 |
| 1942 | 3 |
| 1943 | 1 |
| 1944 | 5 |
| 1945 | 9 |
| 1946 | 15 |
| 1947 | 18 |
| 1948 | 22 |
| 1949 | 16 |
| 1950 | 18 |
| 1951 | 21 |
| 1952 | 17 |
| 1953 | 21 |
| 1954 | 16 |
| 1955 | 18 |
| 1956 | 28 |
| 1957 | 22 |
| 1958 | 24 |
| 1959 | 32 |
| 1960 | 44 |
| 1961 | 39 |
| 1962 | 40 |
| 1963 | 30 |
| 1964 | 37 |
| 1965 | 36 |
| 1966 | 42 |
| 1967 | 35 |
| 1968 | 47 |
| 1969 | 55 |
| 1970 | 51 |
| 1971 | 50 |
| 1972 | 69 |
| 1973 | 66 |
| 1974 | 65 |
| 1975 | 74 |
| 1976 | 74 |
| 1977 | 88 |
| 1978 | 72 |
| 1979 | 81 |
| 1980 | 76 |
| 1981 | 90 |
| 1982 | 80 |
| 1983 | 79 |
| 1984 | 73 |
| 1985 | 105 |
| 1986 | 91 |
| 1987 | 105 |
| 1988 | 125 |
| 1989 | 123 |
| 1990 | 133 |
| 1991 | 139 |
| 1992 | 121 |
| 1993 | 114 |
| 1994 | 140 |
| 1995 | 109 |
| 1996 | 127 |
| 1997 | 136 |
| 1998 | 112 |
| 1999 | 164 |
| 2000 | 118 |
| 2001 | 133 |
| 2002 | 133 |
| 2003 | 144 |
| 2004 | 172 |
| 2005 | 202 |
| 2006 | 204 |
| 2007 | 188 |
| 2008 | 214 |
| 2009 | 221 |
| 2010 | 225 |
| 2011 | 258 |
| 2012 | 279 |
| 2013 | 298 |
| 2014 | 339 |
| 2015 | 350 |
| 2016 | 375 |
| 2017 | 423 |
| 2018 | 409 |
| 2019 | 401 |
| 2020 | 484 |
| 2021 | 219 |