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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1839 | 3 |
| 1841 | 3 |
| 1842 | 3 |
| 1843 | 3 |
| 1846 | 1 |
| 1848 | 1 |
| 1849 | 1 |
| 1850 | 2 |
| 1851 | 2 |
| 1853 | 2 |
| 1854 | 4 |
| 1855 | 1 |
| 1856 | 1 |
| 1857 | 1 |
| 1864 | 2 |
| 1875 | 1 |
| 1888 | 1 |
| 1892 | 2 |
| 1893 | 1 |
| 1907 | 1 |
| 1927 | 1 |
| 1928 | 1 |
| 1932 | 1 |
| 1940 | 1 |
| 1942 | 1 |
| 1945 | 1 |
| 1946 | 4 |
| 1947 | 4 |
| 1948 | 4 |
| 1949 | 1 |
| 1950 | 16 |
| 1951 | 5 |
| 1952 | 8 |
| 1953 | 4 |
| 1954 | 6 |
| 1955 | 3 |
| 1956 | 6 |
| 1957 | 4 |
| 1958 | 8 |
| 1959 | 6 |
| 1960 | 7 |
| 1961 | 7 |
| 1962 | 6 |
| 1963 | 8 |
| 1964 | 10 |
| 1965 | 8 |
| 1966 | 16 |
| 1967 | 19 |
| 1968 | 16 |
| 1969 | 24 |
| 1970 | 13 |
| 1971 | 22 |
| 1972 | 30 |
| 1973 | 33 |
| 1974 | 29 |
| 1975 | 22 |
| 1976 | 32 |
| 1977 | 26 |
| 1978 | 35 |
| 1979 | 29 |
| 1980 | 21 |
| 1981 | 32 |
| 1982 | 21 |
| 1983 | 32 |
| 1984 | 42 |
| 1985 | 47 |
| 1986 | 57 |
| 1987 | 46 |
| 1988 | 50 |
| 1989 | 47 |
| 1990 | 42 |
| 1991 | 53 |
| 1992 | 53 |
| 1993 | 65 |
| 1994 | 71 |
| 1995 | 65 |
| 1996 | 75 |
| 1997 | 68 |
| 1998 | 75 |
| 1999 | 77 |
| 2000 | 71 |
| 2001 | 107 |
| 2002 | 81 |
| 2003 | 91 |
| 2004 | 85 |
| 2005 | 109 |
| 2006 | 96 |
| 2007 | 89 |
| 2008 | 92 |
| 2009 | 88 |
| 2010 | 103 |
| 2011 | 101 |
| 2012 | 140 |
| 2013 | 132 |
| 2014 | 130 |
| 2015 | 132 |
| 2016 | 121 |
| 2017 | 149 |
| 2018 | 164 |
| 2019 | 134 |
| 2020 | 186 |
| 2021 | 202 |
| 2022 | 239 |
| 2023 | 25 |