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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1819 | 1 |
| 1827 | 1 |
| 1843 | 1 |
| 1847 | 2 |
| 1848 | 1 |
| 1849 | 1 |
| 1850 | 1 |
| 1851 | 1 |
| 1922 | 1 |
| 1933 | 1 |
| 1941 | 1 |
| 1948 | 1 |
| 1951 | 1 |
| 1952 | 1 |
| 1953 | 2 |
| 1954 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1966 | 1 |
| 1968 | 2 |
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 1 |
| 1975 | 2 |
| 1976 | 1 |
| 1977 | 6 |
| 1978 | 2 |
| 1979 | 6 |
| 1980 | 2 |
| 1981 | 9 |
| 1982 | 6 |
| 1983 | 8 |
| 1984 | 4 |
| 1985 | 10 |
| 1986 | 9 |
| 1987 | 9 |
| 1988 | 9 |
| 1989 | 11 |
| 1990 | 9 |
| 1991 | 12 |
| 1992 | 9 |
| 1993 | 6 |
| 1994 | 6 |
| 1995 | 11 |
| 1996 | 24 |
| 1997 | 13 |
| 1998 | 11 |
| 1999 | 24 |
| 2000 | 21 |
| 2001 | 22 |
| 2002 | 21 |
| 2003 | 27 |
| 2004 | 29 |
| 2005 | 24 |
| 2006 | 37 |
| 2007 | 42 |
| 2008 | 46 |
| 2009 | 57 |
| 2010 | 66 |
| 2011 | 62 |
| 2012 | 70 |
| 2013 | 59 |
| 2014 | 64 |
| 2015 | 62 |
| 2016 | 44 |
| 2017 | 44 |
| 2018 | 48 |
| 2019 | 46 |
| 2020 | 46 |
| 2021 | 35 |
| 2022 | 35 |
| 2023 | 32 |
| 2024 | 46 |