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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1980 | 1 |
| 1981 | 1 |
| 1986 | 1 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 7 |
| 1992 | 4 |
| 1993 | 1 |
| 1994 | 7 |
| 1995 | 8 |
| 1996 | 14 |
| 1997 | 14 |
| 1998 | 15 |
| 1999 | 13 |
| 2000 | 21 |
| 2001 | 26 |
| 2002 | 21 |
| 2003 | 37 |
| 2004 | 48 |
| 2005 | 75 |
| 2006 | 61 |
| 2007 | 76 |
| 2008 | 84 |
| 2009 | 102 |
| 2010 | 100 |
| 2011 | 109 |
| 2012 | 128 |
| 2013 | 153 |
| 2014 | 125 |
| 2015 | 150 |
| 2016 | 143 |
| 2017 | 121 |
| 2018 | 143 |
| 2019 | 134 |
| 2020 | 144 |
| 2021 | 165 |
| 2022 | 152 |
| 2023 | 39 |