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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1845 | 1 |
| 1877 | 1 |
| 1884 | 1 |
| 1887 | 1 |
| 1897 | 1 |
| 1899 | 5 |
| 1900 | 2 |
| 1901 | 4 |
| 1902 | 2 |
| 1904 | 2 |
| 1910 | 1 |
| 1916 | 1 |
| 1921 | 1 |
| 1923 | 1 |
| 1925 | 1 |
| 1933 | 2 |
| 1934 | 1 |
| 1939 | 1 |
| 1945 | 1 |
| 1946 | 3 |
| 1947 | 5 |
| 1948 | 4 |
| 1949 | 4 |
| 1950 | 10 |
| 1951 | 4 |
| 1952 | 7 |
| 1953 | 3 |
| 1954 | 4 |
| 1955 | 1 |
| 1956 | 3 |
| 1957 | 3 |
| 1958 | 2 |
| 1959 | 10 |
| 1960 | 2 |
| 1961 | 3 |
| 1962 | 9 |
| 1963 | 8 |
| 1964 | 5 |
| 1965 | 31 |
| 1966 | 9 |
| 1967 | 24 |
| 1968 | 21 |
| 1969 | 25 |
| 1970 | 34 |
| 1971 | 20 |
| 1972 | 27 |
| 1973 | 21 |
| 1974 | 27 |
| 1975 | 29 |
| 1976 | 25 |
| 1977 | 35 |
| 1978 | 33 |
| 1979 | 31 |
| 1980 | 34 |
| 1981 | 25 |
| 1982 | 36 |
| 1983 | 34 |
| 1984 | 42 |
| 1985 | 49 |
| 1986 | 38 |
| 1987 | 49 |
| 1988 | 79 |
| 1989 | 67 |
| 1990 | 71 |
| 1991 | 79 |
| 1992 | 72 |
| 1993 | 60 |
| 1994 | 75 |
| 1995 | 74 |
| 1996 | 65 |
| 1997 | 72 |
| 1998 | 48 |
| 1999 | 57 |
| 2000 | 58 |
| 2001 | 68 |
| 2002 | 64 |
| 2003 | 70 |
| 2004 | 69 |
| 2005 | 71 |
| 2006 | 93 |
| 2007 | 83 |
| 2008 | 85 |
| 2009 | 100 |
| 2010 | 127 |
| 2011 | 131 |
| 2012 | 140 |
| 2013 | 155 |
| 2014 | 140 |
| 2015 | 131 |
| 2016 | 132 |
| 2017 | 151 |
| 2018 | 173 |
| 2019 | 168 |
| 2020 | 166 |
| 2021 | 197 |
| 2022 | 163 |
| 2023 | 71 |