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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1822 | 2 |
| 1841 | 1 |
| 1898 | 1 |
| 1904 | 1 |
| 1906 | 1 |
| 1909 | 1 |
| 1910 | 1 |
| 1913 | 2 |
| 1916 | 2 |
| 1917 | 1 |
| 1919 | 1 |
| 1920 | 1 |
| 1922 | 2 |
| 1923 | 1 |
| 1924 | 2 |
| 1925 | 1 |
| 1927 | 2 |
| 1928 | 1 |
| 1929 | 1 |
| 1930 | 1 |
| 1931 | 1 |
| 1933 | 1 |
| 1936 | 2 |
| 1942 | 1 |
| 1943 | 2 |
| 1944 | 2 |
| 1946 | 3 |
| 1947 | 2 |
| 1948 | 1 |
| 1949 | 4 |
| 1950 | 3 |
| 1951 | 8 |
| 1952 | 8 |
| 1953 | 6 |
| 1954 | 3 |
| 1955 | 3 |
| 1956 | 9 |
| 1957 | 6 |
| 1958 | 4 |
| 1959 | 9 |
| 1960 | 4 |
| 1961 | 4 |
| 1963 | 3 |
| 1964 | 6 |
| 1965 | 13 |
| 1966 | 17 |
| 1967 | 15 |
| 1968 | 23 |
| 1969 | 30 |
| 1970 | 20 |
| 1971 | 19 |
| 1972 | 23 |
| 1973 | 22 |
| 1974 | 6 |
| 1975 | 20 |
| 1976 | 12 |
| 1977 | 12 |
| 1978 | 20 |
| 1979 | 60 |
| 1980 | 44 |
| 1981 | 19 |
| 1982 | 20 |
| 1983 | 19 |
| 1984 | 38 |
| 1985 | 25 |
| 1986 | 29 |
| 1987 | 36 |
| 1988 | 31 |
| 1989 | 40 |
| 1990 | 44 |
| 1991 | 39 |
| 1992 | 40 |
| 1993 | 41 |
| 1994 | 61 |
| 1995 | 61 |
| 1996 | 58 |
| 1997 | 68 |
| 1998 | 88 |
| 1999 | 65 |
| 2000 | 50 |
| 2001 | 60 |
| 2002 | 47 |
| 2003 | 78 |
| 2004 | 71 |
| 2005 | 92 |
| 2006 | 76 |
| 2007 | 88 |
| 2008 | 90 |
| 2009 | 101 |
| 2010 | 109 |
| 2011 | 116 |
| 2012 | 113 |
| 2013 | 146 |
| 2014 | 145 |
| 2015 | 124 |
| 2016 | 149 |
| 2017 | 164 |
| 2018 | 142 |
| 2019 | 157 |
| 2020 | 162 |
| 2021 | 190 |
| 2022 | 184 |
| 2023 | 51 |