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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1823 | 3 |
| 1824 | 1 |
| 1825 | 1 |
| 1826 | 1 |
| 1829 | 1 |
| 1871 | 1 |
| 1874 | 1 |
| 1888 | 1 |
| 1893 | 1 |
| 1894 | 1 |
| 1904 | 2 |
| 1922 | 1 |
| 1928 | 2 |
| 1933 | 2 |
| 1935 | 1 |
| 1936 | 2 |
| 1937 | 2 |
| 1938 | 1 |
| 1939 | 4 |
| 1941 | 5 |
| 1943 | 2 |
| 1944 | 3 |
| 1945 | 1 |
| 1946 | 7 |
| 1947 | 6 |
| 1948 | 10 |
| 1949 | 12 |
| 1950 | 11 |
| 1951 | 16 |
| 1952 | 10 |
| 1953 | 19 |
| 1954 | 18 |
| 1955 | 21 |
| 1956 | 17 |
| 1957 | 16 |
| 1958 | 20 |
| 1959 | 18 |
| 1960 | 15 |
| 1961 | 20 |
| 1962 | 33 |
| 1963 | 25 |
| 1964 | 37 |
| 1965 | 35 |
| 1966 | 41 |
| 1967 | 46 |
| 1968 | 56 |
| 1969 | 57 |
| 1970 | 47 |
| 1971 | 58 |
| 1972 | 56 |
| 1973 | 79 |
| 1974 | 85 |
| 1975 | 73 |
| 1976 | 96 |
| 1977 | 76 |
| 1978 | 110 |
| 1979 | 109 |
| 1980 | 111 |
| 1981 | 132 |
| 1982 | 115 |
| 1983 | 109 |
| 1984 | 136 |
| 1985 | 113 |
| 1986 | 129 |
| 1987 | 142 |
| 1988 | 188 |
| 1989 | 155 |
| 1990 | 206 |
| 1991 | 219 |
| 1992 | 213 |
| 1993 | 191 |
| 1994 | 196 |
| 1995 | 193 |
| 1996 | 223 |
| 1997 | 205 |
| 1998 | 222 |
| 1999 | 234 |
| 2000 | 255 |
| 2001 | 284 |
| 2002 | 266 |
| 2003 | 311 |
| 2004 | 324 |
| 2005 | 377 |
| 2006 | 409 |
| 2007 | 377 |
| 2008 | 432 |
| 2009 | 448 |
| 2010 | 418 |
| 2011 | 475 |
| 2012 | 487 |
| 2013 | 468 |
| 2014 | 491 |
| 2015 | 503 |
| 2016 | 507 |
| 2017 | 462 |
| 2018 | 510 |
| 2019 | 524 |
| 2020 | 607 |
| 2021 | 585 |
| 2022 | 535 |
| 2023 | 506 |
| 2024 | 441 |
| 2025 | 387 |