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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 1 |
| 1986 | 1 |
| 1987 | 8 |
| 1988 | 15 |
| 1989 | 24 |
| 1990 | 19 |
| 1991 | 15 |
| 1992 | 17 |
| 1993 | 21 |
| 1994 | 24 |
| 1995 | 33 |
| 1996 | 19 |
| 1997 | 32 |
| 1998 | 13 |
| 1999 | 24 |
| 2000 | 24 |
| 2001 | 25 |
| 2002 | 39 |
| 2003 | 32 |
| 2004 | 32 |
| 2005 | 36 |
| 2006 | 43 |
| 2007 | 43 |
| 2008 | 44 |
| 2009 | 33 |
| 2010 | 44 |
| 2011 | 44 |
| 2012 | 67 |
| 2013 | 60 |
| 2014 | 77 |
| 2015 | 96 |
| 2016 | 123 |
| 2017 | 132 |
| 2018 | 123 |
| 2019 | 137 |
| 2020 | 156 |
| 2021 | 164 |
| 2022 | 157 |
| 2023 | 163 |
| 2024 | 140 |
| 2025 | 164 |
| 2026 | 116 |