Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1806 | 1 |
| 1816 | 1 |
| 1842 | 1 |
| 1852 | 1 |
| 1874 | 1 |
| 1887 | 1 |
| 1888 | 1 |
| 1890 | 1 |
| 1891 | 1 |
| 1895 | 1 |
| 1899 | 1 |
| 1902 | 1 |
| 1903 | 1 |
| 1908 | 3 |
| 1909 | 1 |
| 1911 | 1 |
| 1913 | 1 |
| 1916 | 1 |
| 1917 | 1 |
| 1918 | 3 |
| 1919 | 1 |
| 1920 | 2 |
| 1921 | 1 |
| 1922 | 1 |
| 1923 | 3 |
| 1926 | 1 |
| 1928 | 2 |
| 1932 | 4 |
| 1933 | 3 |
| 1934 | 6 |
| 1935 | 1 |
| 1937 | 2 |
| 1938 | 1 |
| 1940 | 2 |
| 1941 | 1 |
| 1943 | 2 |
| 1945 | 6 |
| 1946 | 24 |
| 1947 | 26 |
| 1948 | 20 |
| 1949 | 21 |
| 1950 | 13 |
| 1951 | 25 |
| 1952 | 13 |
| 1953 | 12 |
| 1954 | 17 |
| 1955 | 17 |
| 1956 | 20 |
| 1957 | 13 |
| 1958 | 23 |
| 1959 | 18 |
| 1960 | 26 |
| 1961 | 18 |
| 1962 | 22 |
| 1963 | 21 |
| 1964 | 35 |
| 1965 | 22 |
| 1966 | 30 |
| 1967 | 31 |
| 1968 | 39 |
| 1969 | 56 |
| 1970 | 43 |
| 1971 | 48 |
| 1972 | 58 |
| 1973 | 42 |
| 1974 | 38 |
| 1975 | 48 |
| 1976 | 46 |
| 1977 | 61 |
| 1978 | 53 |
| 1979 | 54 |
| 1980 | 44 |
| 1981 | 39 |
| 1982 | 68 |
| 1983 | 81 |
| 1984 | 51 |
| 1985 | 58 |
| 1986 | 67 |
| 1987 | 62 |
| 1988 | 67 |
| 1989 | 71 |
| 1990 | 70 |
| 1991 | 69 |
| 1992 | 75 |
| 1993 | 74 |
| 1994 | 71 |
| 1995 | 92 |
| 1996 | 84 |
| 1997 | 101 |
| 1998 | 93 |
| 1999 | 90 |
| 2000 | 78 |
| 2001 | 85 |
| 2002 | 79 |
| 2003 | 100 |
| 2004 | 86 |
| 2005 | 94 |
| 2006 | 102 |
| 2007 | 116 |
| 2008 | 115 |
| 2009 | 114 |
| 2010 | 138 |
| 2011 | 145 |
| 2012 | 163 |
| 2013 | 144 |
| 2014 | 172 |
| 2015 | 184 |
| 2016 | 177 |
| 2017 | 190 |
| 2018 | 184 |
| 2019 | 174 |
| 2020 | 278 |
| 2021 | 121 |