Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1850 | 1 |
| 1852 | 2 |
| 1853 | 1 |
| 1855 | 3 |
| 1856 | 4 |
| 1860 | 1 |
| 1861 | 2 |
| 1862 | 10 |
| 1865 | 1 |
| 1867 | 2 |
| 1868 | 2 |
| 1870 | 2 |
| 1871 | 4 |
| 1872 | 1 |
| 1873 | 4 |
| 1874 | 2 |
| 1878 | 1 |
| 1879 | 1 |
| 1880 | 1 |
| 1881 | 2 |
| 1887 | 1 |
| 1889 | 2 |
| 1893 | 1 |
| 1898 | 1 |
| 1899 | 1 |
| 1905 | 1 |
| 1909 | 1 |
| 1910 | 2 |
| 1911 | 2 |
| 1912 | 1 |
| 1915 | 2 |
| 1921 | 1 |
| 1924 | 2 |
| 1927 | 1 |
| 1928 | 1 |
| 1929 | 1 |
| 1932 | 1 |
| 1934 | 1 |
| 1935 | 1 |
| 1937 | 1 |
| 1939 | 2 |
| 1940 | 5 |
| 1942 | 1 |
| 1943 | 1 |
| 1944 | 1 |
| 1945 | 5 |
| 1946 | 8 |
| 1947 | 19 |
| 1948 | 7 |
| 1949 | 16 |
| 1950 | 18 |
| 1951 | 11 |
| 1952 | 11 |
| 1953 | 15 |
| 1954 | 8 |
| 1955 | 18 |
| 1956 | 12 |
| 1957 | 14 |
| 1958 | 12 |
| 1959 | 13 |
| 1960 | 9 |
| 1961 | 12 |
| 1962 | 11 |
| 1963 | 9 |
| 1964 | 14 |
| 1965 | 14 |
| 1966 | 17 |
| 1967 | 15 |
| 1968 | 17 |
| 1969 | 28 |
| 1970 | 20 |
| 1971 | 25 |
| 1972 | 31 |
| 1973 | 37 |
| 1974 | 37 |
| 1975 | 53 |
| 1976 | 55 |
| 1977 | 58 |
| 1978 | 54 |
| 1979 | 68 |
| 1980 | 61 |
| 1981 | 62 |
| 1982 | 52 |
| 1983 | 89 |
| 1984 | 56 |
| 1985 | 83 |
| 1986 | 82 |
| 1987 | 85 |
| 1988 | 106 |
| 1989 | 93 |
| 1990 | 109 |
| 1991 | 100 |
| 1992 | 119 |
| 1993 | 145 |
| 1994 | 119 |
| 1995 | 136 |
| 1996 | 144 |
| 1997 | 121 |
| 1998 | 130 |
| 1999 | 104 |
| 2000 | 167 |
| 2001 | 166 |
| 2002 | 173 |
| 2003 | 161 |
| 2004 | 189 |
| 2005 | 237 |
| 2006 | 266 |
| 2007 | 283 |
| 2008 | 267 |
| 2009 | 307 |
| 2010 | 307 |
| 2011 | 360 |
| 2012 | 399 |
| 2013 | 440 |
| 2014 | 438 |
| 2015 | 485 |
| 2016 | 476 |
| 2017 | 504 |
| 2018 | 556 |
| 2019 | 575 |
| 2020 | 735 |
| 2021 | 716 |
| 2022 | 55 |