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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1874 | 1 |
| 1879 | 1 |
| 1881 | 1 |
| 1887 | 1 |
| 1904 | 1 |
| 1906 | 1 |
| 1909 | 4 |
| 1921 | 1 |
| 1923 | 2 |
| 1924 | 1 |
| 1926 | 1 |
| 1927 | 1 |
| 1928 | 2 |
| 1929 | 1 |
| 1930 | 2 |
| 1931 | 1 |
| 1935 | 2 |
| 1937 | 1 |
| 1939 | 1 |
| 1940 | 1 |
| 1941 | 1 |
| 1946 | 1 |
| 1947 | 2 |
| 1949 | 3 |
| 1950 | 7 |
| 1951 | 5 |
| 1952 | 4 |
| 1953 | 6 |
| 1954 | 6 |
| 1955 | 3 |
| 1957 | 2 |
| 1958 | 5 |
| 1959 | 5 |
| 1960 | 7 |
| 1961 | 3 |
| 1962 | 6 |
| 1963 | 3 |
| 1965 | 4 |
| 1967 | 8 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 13 |
| 1971 | 11 |
| 1972 | 10 |
| 1973 | 14 |
| 1974 | 21 |
| 1975 | 21 |
| 1976 | 24 |
| 1977 | 32 |
| 1978 | 39 |
| 1979 | 50 |
| 1980 | 33 |
| 1981 | 29 |
| 1982 | 53 |
| 1983 | 56 |
| 1984 | 57 |
| 1985 | 47 |
| 1986 | 50 |
| 1987 | 56 |
| 1988 | 60 |
| 1989 | 56 |
| 1990 | 69 |
| 1991 | 66 |
| 1992 | 67 |
| 1993 | 66 |
| 1994 | 73 |
| 1995 | 73 |
| 1996 | 98 |
| 1997 | 76 |
| 1998 | 96 |
| 1999 | 102 |
| 2000 | 111 |
| 2001 | 90 |
| 2002 | 104 |
| 2003 | 94 |
| 2004 | 83 |
| 2005 | 116 |
| 2006 | 89 |
| 2007 | 114 |
| 2008 | 130 |
| 2009 | 131 |
| 2010 | 136 |
| 2011 | 147 |
| 2012 | 152 |
| 2013 | 179 |
| 2014 | 162 |
| 2015 | 140 |
| 2016 | 155 |
| 2017 | 158 |
| 2018 | 157 |
| 2019 | 146 |
| 2020 | 164 |
| 2021 | 166 |
| 2022 | 182 |
| 2023 | 49 |