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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1839 | 1 |
| 1840 | 2 |
| 1849 | 1 |
| 1871 | 2 |
| 1872 | 4 |
| 1873 | 3 |
| 1874 | 1 |
| 1875 | 1 |
| 1891 | 1 |
| 1915 | 1 |
| 1918 | 1 |
| 1920 | 1 |
| 1921 | 7 |
| 1923 | 1 |
| 1925 | 2 |
| 1926 | 1 |
| 1927 | 4 |
| 1928 | 3 |
| 1930 | 4 |
| 1931 | 2 |
| 1932 | 2 |
| 1933 | 4 |
| 1934 | 5 |
| 1935 | 2 |
| 1936 | 1 |
| 1937 | 8 |
| 1938 | 4 |
| 1939 | 3 |
| 1941 | 2 |
| 1942 | 1 |
| 1943 | 3 |
| 1944 | 1 |
| 1945 | 2 |
| 1946 | 4 |
| 1947 | 7 |
| 1948 | 1 |
| 1949 | 9 |
| 1950 | 5 |
| 1951 | 6 |
| 1952 | 5 |
| 1953 | 8 |
| 1954 | 14 |
| 1955 | 8 |
| 1956 | 3 |
| 1957 | 13 |
| 1958 | 7 |
| 1959 | 15 |
| 1960 | 9 |
| 1961 | 5 |
| 1962 | 9 |
| 1963 | 11 |
| 1964 | 8 |
| 1965 | 6 |
| 1966 | 8 |
| 1967 | 11 |
| 1968 | 8 |
| 1969 | 5 |
| 1970 | 4 |
| 1971 | 5 |
| 1972 | 12 |
| 1973 | 5 |
| 1974 | 10 |
| 1975 | 10 |
| 1976 | 10 |
| 1977 | 6 |
| 1978 | 16 |
| 1979 | 15 |
| 1980 | 19 |
| 1981 | 19 |
| 1982 | 28 |
| 1983 | 26 |
| 1984 | 28 |
| 1985 | 43 |
| 1986 | 44 |
| 1987 | 38 |
| 1988 | 46 |
| 1989 | 49 |
| 1990 | 45 |
| 1991 | 62 |
| 1992 | 67 |
| 1993 | 51 |
| 1994 | 55 |
| 1995 | 58 |
| 1996 | 80 |
| 1997 | 67 |
| 1998 | 80 |
| 1999 | 70 |
| 2000 | 73 |
| 2001 | 82 |
| 2002 | 81 |
| 2003 | 98 |
| 2004 | 98 |
| 2005 | 110 |
| 2006 | 106 |
| 2007 | 113 |
| 2008 | 120 |
| 2009 | 106 |
| 2010 | 135 |
| 2011 | 122 |
| 2012 | 163 |
| 2013 | 195 |
| 2014 | 195 |
| 2015 | 175 |
| 2016 | 168 |
| 2017 | 175 |
| 2018 | 176 |
| 2019 | 160 |
| 2020 | 172 |
| 2021 | 189 |
| 2022 | 184 |
| 2023 | 187 |
| 2024 | 181 |