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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1916 | 1 |
| 1917 | 1 |
| 1920 | 1 |
| 1927 | 1 |
| 1929 | 1 |
| 1933 | 1 |
| 1934 | 1 |
| 1936 | 3 |
| 1937 | 1 |
| 1938 | 1 |
| 1940 | 2 |
| 1942 | 2 |
| 1944 | 2 |
| 1946 | 5 |
| 1947 | 6 |
| 1948 | 2 |
| 1961 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1977 | 1 |
| 1983 | 2 |
| 1985 | 2 |
| 1986 | 4 |
| 1987 | 12 |
| 1988 | 4 |
| 1989 | 7 |
| 1990 | 8 |
| 1991 | 10 |
| 1992 | 7 |
| 1993 | 11 |
| 1994 | 15 |
| 1995 | 18 |
| 1996 | 23 |
| 1997 | 20 |
| 1998 | 17 |
| 1999 | 17 |
| 2000 | 12 |
| 2001 | 18 |
| 2002 | 13 |
| 2003 | 10 |
| 2004 | 10 |
| 2005 | 21 |
| 2006 | 23 |
| 2007 | 25 |
| 2008 | 30 |
| 2009 | 37 |
| 2010 | 27 |
| 2011 | 35 |
| 2012 | 49 |
| 2013 | 38 |
| 2014 | 33 |
| 2015 | 38 |
| 2016 | 40 |
| 2017 | 36 |
| 2018 | 34 |
| 2019 | 25 |
| 2020 | 28 |
| 2021 | 35 |
| 2022 | 29 |
| 2023 | 14 |