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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1841 | 1 |
| 1843 | 1 |
| 1844 | 3 |
| 1846 | 3 |
| 1847 | 3 |
| 1848 | 2 |
| 1851 | 4 |
| 1852 | 1 |
| 1855 | 3 |
| 1856 | 1 |
| 1857 | 1 |
| 1862 | 1 |
| 1863 | 1 |
| 1878 | 2 |
| 1893 | 1 |
| 1896 | 1 |
| 1899 | 1 |
| 1904 | 1 |
| 1918 | 1 |
| 1919 | 1 |
| 1937 | 1 |
| 1942 | 1 |
| 1943 | 1 |
| 1946 | 6 |
| 1947 | 11 |
| 1948 | 7 |
| 1949 | 10 |
| 1950 | 11 |
| 1951 | 8 |
| 1952 | 11 |
| 1953 | 10 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 10 |
| 1957 | 7 |
| 1958 | 7 |
| 1959 | 13 |
| 1960 | 6 |
| 1961 | 11 |
| 1962 | 22 |
| 1963 | 17 |
| 1964 | 28 |
| 1965 | 31 |
| 1966 | 26 |
| 1967 | 23 |
| 1968 | 24 |
| 1969 | 17 |
| 1970 | 18 |
| 1971 | 27 |
| 1972 | 24 |
| 1973 | 26 |
| 1974 | 27 |
| 1975 | 37 |
| 1976 | 42 |
| 1977 | 37 |
| 1978 | 49 |
| 1979 | 41 |
| 1980 | 32 |
| 1981 | 55 |
| 1982 | 49 |
| 1983 | 38 |
| 1984 | 42 |
| 1985 | 39 |
| 1986 | 34 |
| 1987 | 39 |
| 1988 | 39 |
| 1989 | 40 |
| 1990 | 52 |
| 1991 | 51 |
| 1992 | 37 |
| 1993 | 51 |
| 1994 | 43 |
| 1995 | 52 |
| 1996 | 68 |
| 1997 | 55 |
| 1998 | 60 |
| 1999 | 49 |
| 2000 | 57 |
| 2001 | 77 |
| 2002 | 94 |
| 2003 | 79 |
| 2004 | 90 |
| 2005 | 82 |
| 2006 | 87 |
| 2007 | 96 |
| 2008 | 100 |
| 2009 | 92 |
| 2010 | 101 |
| 2011 | 110 |
| 2012 | 104 |
| 2013 | 94 |
| 2014 | 126 |
| 2015 | 120 |
| 2016 | 150 |
| 2017 | 163 |
| 2018 | 148 |
| 2019 | 169 |
| 2020 | 196 |
| 2021 | 199 |
| 2022 | 155 |
| 2023 | 26 |