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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1819 | 3 |
| 1821 | 1 |
| 1846 | 2 |
| 1852 | 2 |
| 1855 | 1 |
| 1867 | 1 |
| 1868 | 1 |
| 1869 | 1 |
| 1871 | 1 |
| 1872 | 1 |
| 1874 | 3 |
| 1875 | 2 |
| 1876 | 5 |
| 1877 | 10 |
| 1878 | 3 |
| 1879 | 3 |
| 1880 | 2 |
| 1881 | 6 |
| 1882 | 5 |
| 1883 | 1 |
| 1884 | 2 |
| 1885 | 4 |
| 1886 | 7 |
| 1887 | 4 |
| 1888 | 2 |
| 1889 | 2 |
| 1890 | 3 |
| 1891 | 1 |
| 1892 | 2 |
| 1893 | 5 |
| 1894 | 8 |
| 1895 | 5 |
| 1896 | 5 |
| 1897 | 4 |
| 1898 | 2 |
| 1899 | 6 |
| 1900 | 5 |
| 1901 | 4 |
| 1902 | 3 |
| 1903 | 1 |
| 1905 | 6 |
| 1906 | 3 |
| 1907 | 9 |
| 1908 | 2 |
| 1909 | 5 |
| 1910 | 5 |
| 1911 | 7 |
| 1913 | 8 |
| 1914 | 8 |
| 1915 | 6 |
| 1916 | 6 |
| 1917 | 8 |
| 1918 | 5 |
| 1919 | 1 |
| 1920 | 3 |
| 1921 | 13 |
| 1922 | 9 |
| 1923 | 6 |
| 1924 | 6 |
| 1925 | 3 |
| 1926 | 1 |
| 1927 | 3 |
| 1928 | 1 |
| 1929 | 4 |
| 1930 | 9 |
| 1931 | 11 |
| 1932 | 26 |
| 1933 | 15 |
| 1934 | 9 |
| 1935 | 7 |
| 1936 | 6 |
| 1937 | 9 |
| 1938 | 3 |
| 1939 | 3 |
| 1940 | 6 |
| 1941 | 2 |
| 1942 | 2 |
| 1943 | 2 |
| 1944 | 6 |
| 1945 | 15 |
| 1946 | 22 |
| 1947 | 41 |
| 1948 | 36 |
| 1949 | 38 |
| 1950 | 48 |
| 1951 | 53 |
| 1952 | 52 |
| 1953 | 64 |
| 1954 | 58 |
| 1955 | 41 |
| 1956 | 59 |
| 1957 | 94 |
| 1958 | 82 |
| 1959 | 103 |
| 1960 | 101 |
| 1961 | 115 |
| 1962 | 138 |
| 1963 | 148 |
| 1964 | 235 |
| 1965 | 202 |
| 1966 | 223 |
| 1967 | 314 |
| 1968 | 390 |
| 1969 | 420 |
| 1970 | 411 |
| 1971 | 543 |
| 1972 | 549 |
| 1973 | 576 |
| 1974 | 687 |
| 1975 | 668 |
| 1976 | 682 |
| 1977 | 741 |
| 1978 | 628 |
| 1979 | 697 |
| 1980 | 820 |
| 1981 | 819 |
| 1982 | 823 |
| 1983 | 877 |
| 1984 | 1037 |
| 1985 | 1135 |
| 1986 | 1122 |
| 1987 | 1069 |
| 1988 | 1111 |
| 1989 | 1088 |
| 1990 | 1257 |
| 1991 | 1244 |
| 1992 | 1363 |
| 1993 | 1448 |
| 1994 | 1524 |
| 1995 | 1711 |
| 1996 | 1757 |
| 1997 | 1731 |
| 1998 | 2197 |
| 1999 | 2457 |
| 2000 | 2850 |
| 2001 | 2977 |
| 2002 | 3160 |
| 2003 | 3233 |
| 2004 | 3408 |
| 2005 | 3721 |
| 2006 | 3966 |
| 2007 | 3917 |
| 2008 | 3990 |
| 2009 | 3993 |
| 2010 | 4011 |
| 2011 | 4119 |
| 2012 | 4441 |
| 2013 | 4551 |
| 2014 | 4598 |
| 2015 | 4645 |
| 2016 | 4679 |
| 2017 | 4705 |
| 2018 | 4869 |
| 2019 | 4866 |
| 2020 | 5233 |
| 2021 | 5357 |
| 2022 | 4693 |
| 2023 | 4579 |
| 2024 | 1687 |