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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1955 | 1 |
| 1956 | 1 |
| 1959 | 1 |
| 1963 | 1 |
| 1980 | 1 |
| 1981 | 2 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 3 |
| 1991 | 1 |
| 1992 | 2 |
| 1993 | 3 |
| 1994 | 5 |
| 1995 | 4 |
| 1996 | 10 |
| 1997 | 9 |
| 1998 | 8 |
| 1999 | 7 |
| 2000 | 13 |
| 2001 | 7 |
| 2002 | 15 |
| 2003 | 19 |
| 2004 | 23 |
| 2005 | 24 |
| 2006 | 29 |
| 2007 | 46 |
| 2008 | 39 |
| 2009 | 39 |
| 2010 | 44 |
| 2011 | 60 |
| 2012 | 65 |
| 2013 | 66 |
| 2014 | 59 |
| 2015 | 80 |
| 2016 | 83 |
| 2017 | 77 |
| 2018 | 81 |
| 2019 | 87 |
| 2020 | 109 |
| 2021 | 113 |
| 2022 | 105 |
| 2023 | 18 |