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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1851 | 1 |
| 1853 | 2 |
| 1855 | 2 |
| 1856 | 4 |
| 1857 | 2 |
| 1858 | 6 |
| 1859 | 3 |
| 1860 | 12 |
| 1861 | 2 |
| 1862 | 3 |
| 1863 | 5 |
| 1864 | 3 |
| 1865 | 4 |
| 1866 | 3 |
| 1867 | 7 |
| 1868 | 4 |
| 1869 | 4 |
| 1870 | 1 |
| 1871 | 3 |
| 1872 | 3 |
| 1873 | 2 |
| 1874 | 2 |
| 1875 | 3 |
| 1876 | 2 |
| 1877 | 3 |
| 1881 | 1 |
| 1882 | 2 |
| 1884 | 1 |
| 1886 | 1 |
| 1889 | 2 |
| 1890 | 1 |
| 1893 | 5 |
| 1894 | 21 |
| 1895 | 11 |
| 1896 | 5 |
| 1934 | 1 |
| 1951 | 1 |
| 1952 | 2 |
| 1953 | 1 |
| 1957 | 1 |
| 1958 | 1 |
| 1962 | 3 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 1 |
| 1967 | 3 |
| 1968 | 5 |
| 1969 | 5 |
| 1970 | 13 |
| 1971 | 9 |
| 1972 | 9 |
| 1973 | 15 |
| 1974 | 14 |
| 1975 | 14 |
| 1976 | 9 |
| 1977 | 18 |
| 1978 | 16 |
| 1979 | 16 |
| 1980 | 18 |
| 1981 | 39 |
| 1982 | 27 |
| 1983 | 22 |
| 1984 | 16 |
| 1985 | 23 |
| 1986 | 20 |
| 1987 | 17 |
| 1988 | 19 |
| 1989 | 15 |
| 1990 | 18 |
| 1991 | 7 |
| 1992 | 22 |
| 1993 | 15 |
| 1994 | 20 |
| 1995 | 20 |
| 1996 | 22 |
| 1997 | 27 |
| 1998 | 19 |
| 1999 | 24 |
| 2000 | 32 |
| 2001 | 29 |
| 2002 | 40 |
| 2003 | 39 |
| 2004 | 50 |
| 2005 | 36 |
| 2006 | 23 |
| 2007 | 38 |
| 2008 | 50 |
| 2009 | 46 |
| 2010 | 49 |
| 2011 | 55 |
| 2012 | 50 |
| 2013 | 51 |
| 2014 | 65 |
| 2015 | 57 |
| 2016 | 56 |
| 2017 | 58 |
| 2018 | 42 |
| 2019 | 63 |
| 2020 | 60 |
| 2021 | 71 |
| 2022 | 77 |
| 2023 | 76 |