Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1851 | 1 |
| 1852 | 1 |
| 1856 | 2 |
| 1857 | 1 |
| 1858 | 1 |
| 1862 | 1 |
| 1863 | 1 |
| 1864 | 2 |
| 1866 | 1 |
| 1867 | 4 |
| 1869 | 1 |
| 1893 | 1 |
| 1897 | 1 |
| 1910 | 1 |
| 1913 | 1 |
| 1914 | 2 |
| 1915 | 2 |
| 1916 | 1 |
| 1920 | 2 |
| 1921 | 1 |
| 1922 | 1 |
| 1924 | 1 |
| 1925 | 1 |
| 1930 | 2 |
| 1932 | 3 |
| 1933 | 2 |
| 1934 | 1 |
| 1935 | 3 |
| 1936 | 2 |
| 1937 | 2 |
| 1938 | 2 |
| 1939 | 2 |
| 1940 | 1 |
| 1944 | 3 |
| 1945 | 4 |
| 1946 | 11 |
| 1947 | 10 |
| 1948 | 10 |
| 1949 | 14 |
| 1950 | 6 |
| 1951 | 8 |
| 1952 | 5 |
| 1953 | 5 |
| 1954 | 7 |
| 1955 | 12 |
| 1956 | 4 |
| 1957 | 14 |
| 1958 | 8 |
| 1959 | 10 |
| 1960 | 8 |
| 1961 | 4 |
| 1962 | 6 |
| 1963 | 3 |
| 1964 | 10 |
| 1965 | 13 |
| 1966 | 13 |
| 1967 | 11 |
| 1968 | 21 |
| 1969 | 23 |
| 1970 | 23 |
| 1971 | 25 |
| 1972 | 15 |
| 1973 | 17 |
| 1974 | 11 |
| 1975 | 21 |
| 1976 | 15 |
| 1977 | 28 |
| 1978 | 30 |
| 1979 | 26 |
| 1980 | 29 |
| 1981 | 27 |
| 1982 | 23 |
| 1983 | 23 |
| 1984 | 28 |
| 1985 | 37 |
| 1986 | 46 |
| 1987 | 39 |
| 1988 | 42 |
| 1989 | 38 |
| 1990 | 57 |
| 1991 | 53 |
| 1992 | 63 |
| 1993 | 65 |
| 1994 | 54 |
| 1995 | 67 |
| 1996 | 71 |
| 1997 | 79 |
| 1998 | 72 |
| 1999 | 71 |
| 2000 | 82 |
| 2001 | 91 |
| 2002 | 80 |
| 2003 | 102 |
| 2004 | 108 |
| 2005 | 115 |
| 2006 | 144 |
| 2007 | 146 |
| 2008 | 168 |
| 2009 | 182 |
| 2010 | 209 |
| 2011 | 221 |
| 2012 | 213 |
| 2013 | 255 |
| 2014 | 235 |
| 2015 | 253 |
| 2016 | 240 |
| 2017 | 240 |
| 2018 | 276 |
| 2019 | 284 |
| 2020 | 309 |
| 2021 | 168 |