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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1825 | 1 |
| 1842 | 1 |
| 1889 | 1 |
| 1890 | 1 |
| 1907 | 2 |
| 1915 | 1 |
| 1931 | 1 |
| 1935 | 1 |
| 1945 | 1 |
| 1948 | 2 |
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 3 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 2 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 2 |
| 1959 | 4 |
| 1960 | 5 |
| 1961 | 4 |
| 1962 | 5 |
| 1964 | 4 |
| 1965 | 3 |
| 1966 | 7 |
| 1967 | 8 |
| 1968 | 7 |
| 1969 | 10 |
| 1970 | 19 |
| 1971 | 24 |
| 1972 | 19 |
| 1973 | 16 |
| 1974 | 22 |
| 1975 | 18 |
| 1976 | 24 |
| 1977 | 26 |
| 1978 | 28 |
| 1979 | 29 |
| 1980 | 34 |
| 1981 | 38 |
| 1982 | 59 |
| 1983 | 57 |
| 1984 | 55 |
| 1985 | 54 |
| 1986 | 35 |
| 1987 | 58 |
| 1988 | 34 |
| 1989 | 54 |
| 1990 | 44 |
| 1991 | 59 |
| 1992 | 46 |
| 1993 | 47 |
| 1994 | 64 |
| 1995 | 59 |
| 1996 | 56 |
| 1997 | 55 |
| 1998 | 72 |
| 1999 | 73 |
| 2000 | 82 |
| 2001 | 63 |
| 2002 | 56 |
| 2003 | 73 |
| 2004 | 83 |
| 2005 | 92 |
| 2006 | 87 |
| 2007 | 84 |
| 2008 | 112 |
| 2009 | 124 |
| 2010 | 125 |
| 2011 | 164 |
| 2012 | 138 |
| 2013 | 174 |
| 2014 | 142 |
| 2015 | 151 |
| 2016 | 135 |
| 2017 | 140 |
| 2018 | 134 |
| 2019 | 127 |
| 2020 | 142 |
| 2021 | 154 |
| 2022 | 129 |
| 2023 | 58 |