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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1858 | 2 |
| 1859 | 1 |
| 1946 | 1 |
| 1947 | 1 |
| 1948 | 2 |
| 1951 | 2 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 1 |
| 1959 | 1 |
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 1 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 3 |
| 1970 | 3 |
| 1971 | 3 |
| 1972 | 3 |
| 1973 | 6 |
| 1974 | 15 |
| 1975 | 16 |
| 1976 | 15 |
| 1977 | 9 |
| 1978 | 20 |
| 1979 | 22 |
| 1980 | 20 |
| 1981 | 37 |
| 1982 | 32 |
| 1983 | 39 |
| 1984 | 32 |
| 1985 | 42 |
| 1986 | 41 |
| 1987 | 45 |
| 1988 | 49 |
| 1989 | 47 |
| 1990 | 64 |
| 1991 | 58 |
| 1992 | 65 |
| 1993 | 80 |
| 1994 | 67 |
| 1995 | 83 |
| 1996 | 93 |
| 1997 | 109 |
| 1998 | 102 |
| 1999 | 99 |
| 2000 | 118 |
| 2001 | 150 |
| 2002 | 142 |
| 2003 | 158 |
| 2004 | 193 |
| 2005 | 222 |
| 2006 | 224 |
| 2007 | 219 |
| 2008 | 277 |
| 2009 | 265 |
| 2010 | 288 |
| 2011 | 358 |
| 2012 | 343 |
| 2013 | 344 |
| 2014 | 369 |
| 2015 | 365 |
| 2016 | 304 |
| 2017 | 301 |
| 2018 | 342 |
| 2019 | 328 |
| 2020 | 393 |
| 2021 | 419 |
| 2022 | 401 |
| 2023 | 346 |
| 2024 | 137 |