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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1823 | 1 |
| 1880 | 2 |
| 1884 | 4 |
| 1885 | 3 |
| 1886 | 1 |
| 1887 | 1 |
| 1888 | 1 |
| 1891 | 1 |
| 1893 | 1 |
| 1895 | 2 |
| 1896 | 8 |
| 1898 | 1 |
| 1899 | 1 |
| 1916 | 1 |
| 1928 | 1 |
| 1941 | 1 |
| 1942 | 1 |
| 1945 | 2 |
| 1947 | 2 |
| 1948 | 3 |
| 1949 | 1 |
| 1950 | 3 |
| 1951 | 1 |
| 1952 | 6 |
| 1953 | 3 |
| 1954 | 2 |
| 1955 | 3 |
| 1956 | 3 |
| 1957 | 2 |
| 1958 | 4 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 3 |
| 1962 | 3 |
| 1963 | 3 |
| 1964 | 3 |
| 1965 | 5 |
| 1966 | 3 |
| 1967 | 2 |
| 1968 | 7 |
| 1969 | 12 |
| 1970 | 24 |
| 1971 | 14 |
| 1972 | 25 |
| 1973 | 24 |
| 1974 | 25 |
| 1975 | 17 |
| 1976 | 28 |
| 1977 | 17 |
| 1978 | 19 |
| 1979 | 27 |
| 1980 | 28 |
| 1981 | 23 |
| 1982 | 24 |
| 1983 | 32 |
| 1984 | 41 |
| 1985 | 25 |
| 1986 | 38 |
| 1987 | 36 |
| 1988 | 40 |
| 1989 | 44 |
| 1990 | 47 |
| 1991 | 53 |
| 1992 | 47 |
| 1993 | 49 |
| 1994 | 69 |
| 1995 | 50 |
| 1996 | 62 |
| 1997 | 61 |
| 1998 | 68 |
| 1999 | 65 |
| 2000 | 83 |
| 2001 | 77 |
| 2002 | 75 |
| 2003 | 74 |
| 2004 | 91 |
| 2005 | 83 |
| 2006 | 86 |
| 2007 | 101 |
| 2008 | 121 |
| 2009 | 95 |
| 2010 | 121 |
| 2011 | 131 |
| 2012 | 155 |
| 2013 | 152 |
| 2014 | 171 |
| 2015 | 176 |
| 2016 | 167 |
| 2017 | 174 |
| 2018 | 146 |
| 2019 | 144 |
| 2020 | 195 |
| 2021 | 189 |
| 2022 | 184 |
| 2023 | 87 |