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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1867 | 2 |
| 1877 | 1 |
| 1884 | 1 |
| 1886 | 1 |
| 1896 | 1 |
| 1901 | 1 |
| 1903 | 1 |
| 1908 | 1 |
| 1909 | 1 |
| 1910 | 2 |
| 1912 | 1 |
| 1915 | 4 |
| 1916 | 3 |
| 1917 | 2 |
| 1918 | 1 |
| 1920 | 2 |
| 1921 | 4 |
| 1923 | 2 |
| 1925 | 1 |
| 1926 | 1 |
| 1927 | 1 |
| 1928 | 1 |
| 1929 | 1 |
| 1931 | 1 |
| 1933 | 1 |
| 1934 | 2 |
| 1935 | 1 |
| 1936 | 1 |
| 1940 | 2 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 2 |
| 1980 | 2 |
| 1981 | 2 |
| 1986 | 5 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 3 |
| 1990 | 1 |
| 1991 | 1 |
| 1992 | 1 |
| 1993 | 2 |
| 1994 | 4 |
| 1995 | 4 |
| 1996 | 2 |
| 1997 | 3 |
| 1998 | 5 |
| 1999 | 7 |
| 2000 | 4 |
| 2001 | 9 |
| 2002 | 6 |
| 2003 | 9 |
| 2004 | 7 |
| 2005 | 6 |
| 2006 | 9 |
| 2007 | 18 |
| 2008 | 12 |
| 2009 | 13 |
| 2010 | 10 |
| 2011 | 8 |
| 2012 | 9 |
| 2013 | 13 |
| 2014 | 9 |
| 2015 | 11 |
| 2016 | 14 |
| 2017 | 16 |
| 2018 | 15 |
| 2019 | 15 |
| 2020 | 12 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 4 |