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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1819 | 1 |
| 1823 | 1 |
| 1856 | 1 |
| 1891 | 2 |
| 1903 | 1 |
| 1905 | 1 |
| 1906 | 1 |
| 1907 | 2 |
| 1908 | 1 |
| 1909 | 1 |
| 1910 | 3 |
| 1911 | 1 |
| 1914 | 1 |
| 1915 | 1 |
| 1916 | 1 |
| 1920 | 1 |
| 1921 | 1 |
| 1924 | 2 |
| 1926 | 2 |
| 1927 | 2 |
| 1929 | 1 |
| 1930 | 1 |
| 1931 | 1 |
| 1932 | 2 |
| 1933 | 1 |
| 1934 | 3 |
| 1935 | 1 |
| 1936 | 1 |
| 1937 | 1 |
| 1939 | 1 |
| 1940 | 1 |
| 1941 | 1 |
| 1946 | 4 |
| 1947 | 1 |
| 1948 | 4 |
| 1949 | 6 |
| 1950 | 10 |
| 1951 | 6 |
| 1952 | 10 |
| 1953 | 8 |
| 1954 | 7 |
| 1955 | 15 |
| 1956 | 9 |
| 1957 | 19 |
| 1958 | 19 |
| 1959 | 13 |
| 1960 | 13 |
| 1961 | 19 |
| 1962 | 11 |
| 1963 | 27 |
| 1964 | 25 |
| 1965 | 34 |
| 1966 | 50 |
| 1967 | 45 |
| 1968 | 59 |
| 1969 | 64 |
| 1970 | 59 |
| 1971 | 86 |
| 1972 | 74 |
| 1973 | 80 |
| 1974 | 97 |
| 1975 | 91 |
| 1976 | 106 |
| 1977 | 118 |
| 1978 | 125 |
| 1979 | 147 |
| 1980 | 150 |
| 1981 | 156 |
| 1982 | 121 |
| 1983 | 134 |
| 1984 | 153 |
| 1985 | 157 |
| 1986 | 179 |
| 1987 | 175 |
| 1988 | 181 |
| 1989 | 174 |
| 1990 | 223 |
| 1991 | 211 |
| 1992 | 209 |
| 1993 | 234 |
| 1994 | 204 |
| 1995 | 217 |
| 1996 | 220 |
| 1997 | 228 |
| 1998 | 236 |
| 1999 | 214 |
| 2000 | 258 |
| 2001 | 245 |
| 2002 | 230 |
| 2003 | 278 |
| 2004 | 295 |
| 2005 | 336 |
| 2006 | 264 |
| 2007 | 260 |
| 2008 | 289 |
| 2009 | 330 |
| 2010 | 336 |
| 2011 | 336 |
| 2012 | 409 |
| 2013 | 389 |
| 2014 | 437 |
| 2015 | 437 |
| 2016 | 474 |
| 2017 | 490 |
| 2018 | 485 |
| 2019 | 502 |
| 2020 | 537 |
| 2021 | 568 |
| 2022 | 537 |
| 2023 | 467 |