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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1842 | 1 |
| 1867 | 1 |
| 1906 | 1 |
| 1910 | 1 |
| 1914 | 1 |
| 1917 | 1 |
| 1918 | 3 |
| 1921 | 2 |
| 1922 | 2 |
| 1923 | 2 |
| 1924 | 1 |
| 1925 | 3 |
| 1927 | 2 |
| 1928 | 2 |
| 1929 | 1 |
| 1930 | 2 |
| 1932 | 1 |
| 1933 | 3 |
| 1936 | 1 |
| 1938 | 2 |
| 1939 | 1 |
| 1940 | 1 |
| 1941 | 1 |
| 1943 | 1 |
| 1944 | 2 |
| 1945 | 4 |
| 1946 | 5 |
| 1947 | 5 |
| 1948 | 1 |
| 1949 | 1 |
| 1950 | 5 |
| 1951 | 6 |
| 1952 | 3 |
| 1953 | 7 |
| 1954 | 4 |
| 1955 | 4 |
| 1956 | 7 |
| 1957 | 6 |
| 1958 | 9 |
| 1959 | 6 |
| 1960 | 3 |
| 1961 | 10 |
| 1962 | 5 |
| 1963 | 6 |
| 1964 | 11 |
| 1965 | 8 |
| 1966 | 12 |
| 1967 | 13 |
| 1968 | 14 |
| 1969 | 11 |
| 1970 | 15 |
| 1971 | 13 |
| 1972 | 26 |
| 1973 | 18 |
| 1974 | 22 |
| 1975 | 29 |
| 1976 | 30 |
| 1977 | 29 |
| 1978 | 25 |
| 1979 | 18 |
| 1980 | 31 |
| 1981 | 44 |
| 1982 | 50 |
| 1983 | 59 |
| 1984 | 58 |
| 1985 | 56 |
| 1986 | 62 |
| 1987 | 63 |
| 1988 | 65 |
| 1989 | 52 |
| 1990 | 72 |
| 1991 | 57 |
| 1992 | 82 |
| 1993 | 70 |
| 1994 | 87 |
| 1995 | 79 |
| 1996 | 66 |
| 1997 | 67 |
| 1998 | 90 |
| 1999 | 104 |
| 2000 | 149 |
| 2001 | 178 |
| 2002 | 161 |
| 2003 | 185 |
| 2004 | 204 |
| 2005 | 196 |
| 2006 | 261 |
| 2007 | 240 |
| 2008 | 302 |
| 2009 | 348 |
| 2010 | 360 |
| 2011 | 354 |
| 2012 | 386 |
| 2013 | 410 |
| 2014 | 561 |
| 2015 | 694 |
| 2016 | 738 |
| 2017 | 748 |
| 2018 | 813 |
| 2019 | 794 |
| 2020 | 1045 |
| 2021 | 1151 |
| 2022 | 1109 |
| 2023 | 1103 |
| 2024 | 508 |