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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1855 | 1 |
| 1876 | 2 |
| 1913 | 1 |
| 1922 | 1 |
| 1927 | 1 |
| 1930 | 1 |
| 1934 | 1 |
| 1935 | 1 |
| 1937 | 1 |
| 1939 | 1 |
| 1940 | 2 |
| 1941 | 1 |
| 1942 | 3 |
| 1943 | 2 |
| 1946 | 4 |
| 1947 | 7 |
| 1948 | 6 |
| 1949 | 5 |
| 1950 | 12 |
| 1951 | 14 |
| 1952 | 12 |
| 1953 | 15 |
| 1954 | 8 |
| 1955 | 9 |
| 1956 | 11 |
| 1957 | 6 |
| 1958 | 13 |
| 1959 | 12 |
| 1960 | 15 |
| 1961 | 12 |
| 1962 | 12 |
| 1963 | 20 |
| 1964 | 25 |
| 1965 | 18 |
| 1966 | 29 |
| 1967 | 16 |
| 1968 | 26 |
| 1969 | 33 |
| 1970 | 33 |
| 1971 | 32 |
| 1972 | 25 |
| 1973 | 36 |
| 1974 | 36 |
| 1975 | 41 |
| 1976 | 57 |
| 1977 | 44 |
| 1978 | 56 |
| 1979 | 50 |
| 1980 | 53 |
| 1981 | 60 |
| 1982 | 48 |
| 1983 | 67 |
| 1984 | 64 |
| 1985 | 59 |
| 1986 | 67 |
| 1987 | 68 |
| 1988 | 85 |
| 1989 | 84 |
| 1990 | 80 |
| 1991 | 85 |
| 1992 | 91 |
| 1993 | 85 |
| 1994 | 73 |
| 1995 | 106 |
| 1996 | 85 |
| 1997 | 100 |
| 1998 | 98 |
| 1999 | 94 |
| 2000 | 105 |
| 2001 | 110 |
| 2002 | 84 |
| 2003 | 105 |
| 2004 | 114 |
| 2005 | 113 |
| 2006 | 156 |
| 2007 | 143 |
| 2008 | 128 |
| 2009 | 115 |
| 2010 | 132 |
| 2011 | 137 |
| 2012 | 142 |
| 2013 | 154 |
| 2014 | 171 |
| 2015 | 166 |
| 2016 | 183 |
| 2017 | 169 |
| 2018 | 162 |
| 2019 | 139 |
| 2020 | 154 |
| 2021 | 168 |
| 2022 | 165 |
| 2023 | 20 |