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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 1 |
| 1973 | 1 |
| 1981 | 1 |
| 1986 | 2 |
| 1988 | 1 |
| 1993 | 4 |
| 1994 | 1 |
| 1995 | 4 |
| 1996 | 1 |
| 1997 | 6 |
| 1998 | 12 |
| 1999 | 5 |
| 2000 | 7 |
| 2001 | 9 |
| 2002 | 7 |
| 2003 | 11 |
| 2004 | 27 |
| 2005 | 39 |
| 2006 | 67 |
| 2007 | 68 |
| 2008 | 71 |
| 2009 | 65 |
| 2010 | 99 |
| 2011 | 97 |
| 2012 | 127 |
| 2013 | 139 |
| 2014 | 144 |
| 2015 | 158 |
| 2016 | 150 |
| 2017 | 154 |
| 2018 | 150 |
| 2019 | 171 |
| 2020 | 169 |
| 2021 | 197 |
| 2022 | 209 |
| 2023 | 180 |
| 2024 | 183 |
| 2025 | 180 |