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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1805 | 1 |
| 1806 | 1 |
| 1856 | 1 |
| 1877 | 1 |
| 1884 | 1 |
| 1919 | 1 |
| 1925 | 1 |
| 1926 | 1 |
| 1927 | 1 |
| 1929 | 1 |
| 1930 | 3 |
| 1932 | 1 |
| 1933 | 1 |
| 1934 | 3 |
| 1935 | 3 |
| 1936 | 2 |
| 1937 | 1 |
| 1938 | 1 |
| 1939 | 4 |
| 1940 | 6 |
| 1941 | 2 |
| 1943 | 1 |
| 1944 | 1 |
| 1945 | 1 |
| 1946 | 3 |
| 1947 | 5 |
| 1948 | 8 |
| 1949 | 4 |
| 1950 | 13 |
| 1951 | 9 |
| 1952 | 18 |
| 1953 | 14 |
| 1954 | 14 |
| 1955 | 7 |
| 1956 | 5 |
| 1957 | 11 |
| 1958 | 7 |
| 1959 | 14 |
| 1960 | 14 |
| 1961 | 16 |
| 1962 | 8 |
| 1963 | 19 |
| 1964 | 26 |
| 1965 | 26 |
| 1966 | 22 |
| 1967 | 32 |
| 1968 | 21 |
| 1969 | 27 |
| 1970 | 28 |
| 1971 | 17 |
| 1972 | 39 |
| 1973 | 38 |
| 1974 | 29 |
| 1975 | 50 |
| 1976 | 40 |
| 1977 | 43 |
| 1978 | 44 |
| 1979 | 49 |
| 1980 | 39 |
| 1981 | 44 |
| 1982 | 28 |
| 1983 | 38 |
| 1984 | 40 |
| 1985 | 45 |
| 1986 | 46 |
| 1987 | 63 |
| 1988 | 69 |
| 1989 | 63 |
| 1990 | 66 |
| 1991 | 59 |
| 1992 | 71 |
| 1993 | 118 |
| 1994 | 80 |
| 1995 | 84 |
| 1996 | 94 |
| 1997 | 94 |
| 1998 | 97 |
| 1999 | 105 |
| 2000 | 105 |
| 2001 | 126 |
| 2002 | 139 |
| 2003 | 157 |
| 2004 | 148 |
| 2005 | 180 |
| 2006 | 196 |
| 2007 | 201 |
| 2008 | 192 |
| 2009 | 200 |
| 2010 | 254 |
| 2011 | 278 |
| 2012 | 307 |
| 2013 | 332 |
| 2014 | 324 |
| 2015 | 369 |
| 2016 | 337 |
| 2017 | 314 |
| 2018 | 348 |
| 2019 | 399 |
| 2020 | 443 |
| 2021 | 492 |
| 2022 | 451 |
| 2023 | 38 |