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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1819 | 1 |
| 1828 | 1 |
| 1836 | 1 |
| 1840 | 2 |
| 1844 | 6 |
| 1846 | 2 |
| 1847 | 2 |
| 1848 | 1 |
| 1855 | 1 |
| 1856 | 1 |
| 1867 | 1 |
| 1873 | 1 |
| 1875 | 1 |
| 1876 | 1 |
| 1883 | 1 |
| 1887 | 3 |
| 1888 | 1 |
| 1895 | 1 |
| 1899 | 1 |
| 1905 | 1 |
| 1907 | 1 |
| 1915 | 1 |
| 1918 | 1 |
| 1919 | 1 |
| 1922 | 2 |
| 1927 | 1 |
| 1932 | 1 |
| 1935 | 1 |
| 1937 | 1 |
| 1938 | 1 |
| 1944 | 1 |
| 1945 | 2 |
| 1946 | 2 |
| 1947 | 2 |
| 1948 | 8 |
| 1949 | 4 |
| 1950 | 10 |
| 1951 | 5 |
| 1952 | 12 |
| 1953 | 6 |
| 1954 | 10 |
| 1955 | 9 |
| 1956 | 7 |
| 1957 | 8 |
| 1958 | 10 |
| 1959 | 12 |
| 1960 | 5 |
| 1961 | 5 |
| 1962 | 7 |
| 1963 | 14 |
| 1964 | 16 |
| 1965 | 16 |
| 1966 | 9 |
| 1967 | 10 |
| 1968 | 13 |
| 1969 | 8 |
| 1970 | 11 |
| 1971 | 12 |
| 1972 | 13 |
| 1973 | 19 |
| 1974 | 16 |
| 1975 | 27 |
| 1976 | 32 |
| 1977 | 30 |
| 1978 | 31 |
| 1979 | 34 |
| 1980 | 24 |
| 1981 | 39 |
| 1982 | 36 |
| 1983 | 36 |
| 1984 | 51 |
| 1985 | 63 |
| 1986 | 42 |
| 1987 | 51 |
| 1988 | 60 |
| 1989 | 43 |
| 1990 | 61 |
| 1991 | 53 |
| 1992 | 57 |
| 1993 | 44 |
| 1994 | 56 |
| 1995 | 54 |
| 1996 | 64 |
| 1997 | 42 |
| 1998 | 45 |
| 1999 | 53 |
| 2000 | 66 |
| 2001 | 45 |
| 2002 | 35 |
| 2003 | 47 |
| 2004 | 63 |
| 2005 | 44 |
| 2006 | 60 |
| 2007 | 62 |
| 2008 | 48 |
| 2009 | 62 |
| 2010 | 69 |
| 2011 | 76 |
| 2012 | 83 |
| 2013 | 96 |
| 2014 | 114 |
| 2015 | 181 |
| 2016 | 172 |
| 2017 | 169 |
| 2018 | 142 |
| 2019 | 126 |
| 2020 | 133 |
| 2021 | 140 |
| 2022 | 103 |
| 2023 | 33 |