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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1909 | 1 |
| 1910 | 1 |
| 1921 | 1 |
| 1939 | 1 |
| 1940 | 1 |
| 1949 | 2 |
| 1950 | 2 |
| 1953 | 1 |
| 1954 | 3 |
| 1955 | 3 |
| 1957 | 1 |
| 1972 | 2 |
| 1973 | 1 |
| 1978 | 2 |
| 1988 | 2 |
| 1989 | 2 |
| 1990 | 1 |
| 1991 | 1 |
| 1993 | 3 |
| 1995 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1998 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 4 |
| 2005 | 7 |
| 2006 | 8 |
| 2007 | 9 |
| 2008 | 5 |
| 2009 | 5 |
| 2010 | 20 |
| 2011 | 20 |
| 2012 | 22 |
| 2013 | 24 |
| 2014 | 23 |
| 2015 | 35 |
| 2016 | 35 |
| 2017 | 30 |
| 2018 | 32 |
| 2019 | 42 |
| 2020 | 41 |
| 2021 | 47 |
| 2022 | 48 |