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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1842 | 6 |
| 1843 | 1 |
| 1847 | 1 |
| 1851 | 1 |
| 1869 | 1 |
| 1871 | 1 |
| 1874 | 1 |
| 1878 | 1 |
| 1880 | 1 |
| 1895 | 1 |
| 1908 | 1 |
| 1910 | 2 |
| 1927 | 1 |
| 1933 | 1 |
| 1934 | 1 |
| 1937 | 1 |
| 1938 | 1 |
| 1941 | 1 |
| 1942 | 1 |
| 1943 | 1 |
| 1945 | 2 |
| 1946 | 2 |
| 1947 | 3 |
| 1948 | 5 |
| 1949 | 3 |
| 1950 | 3 |
| 1951 | 7 |
| 1952 | 6 |
| 1953 | 5 |
| 1954 | 5 |
| 1955 | 5 |
| 1956 | 3 |
| 1957 | 8 |
| 1958 | 2 |
| 1959 | 13 |
| 1960 | 11 |
| 1961 | 12 |
| 1962 | 16 |
| 1963 | 13 |
| 1964 | 12 |
| 1965 | 8 |
| 1966 | 19 |
| 1967 | 17 |
| 1968 | 18 |
| 1969 | 14 |
| 1970 | 16 |
| 1971 | 18 |
| 1972 | 16 |
| 1973 | 14 |
| 1974 | 31 |
| 1975 | 24 |
| 1976 | 20 |
| 1977 | 21 |
| 1978 | 26 |
| 1979 | 14 |
| 1980 | 18 |
| 1981 | 16 |
| 1982 | 21 |
| 1983 | 26 |
| 1984 | 27 |
| 1985 | 22 |
| 1986 | 30 |
| 1987 | 37 |
| 1988 | 26 |
| 1989 | 42 |
| 1990 | 34 |
| 1991 | 35 |
| 1992 | 44 |
| 1993 | 39 |
| 1994 | 39 |
| 1995 | 50 |
| 1996 | 55 |
| 1997 | 75 |
| 1998 | 69 |
| 1999 | 83 |
| 2000 | 62 |
| 2001 | 74 |
| 2002 | 77 |
| 2003 | 77 |
| 2004 | 90 |
| 2005 | 114 |
| 2006 | 105 |
| 2007 | 118 |
| 2008 | 130 |
| 2009 | 87 |
| 2010 | 100 |
| 2011 | 139 |
| 2012 | 139 |
| 2013 | 155 |
| 2014 | 131 |
| 2015 | 147 |
| 2016 | 143 |
| 2017 | 162 |
| 2018 | 165 |
| 2019 | 138 |
| 2020 | 167 |
| 2021 | 184 |
| 2022 | 166 |
| 2023 | 110 |