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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1969 | 2 |
| 1980 | 2 |
| 1989 | 2 |
| 1990 | 21 |
| 1991 | 38 |
| 1992 | 53 |
| 1993 | 70 |
| 1994 | 64 |
| 1995 | 69 |
| 1996 | 61 |
| 1997 | 61 |
| 1998 | 72 |
| 1999 | 55 |
| 2000 | 60 |
| 2001 | 56 |
| 2002 | 80 |
| 2003 | 85 |
| 2004 | 100 |
| 2005 | 121 |
| 2006 | 123 |
| 2007 | 124 |
| 2008 | 105 |
| 2009 | 117 |
| 2010 | 154 |
| 2011 | 168 |
| 2012 | 159 |
| 2013 | 191 |
| 2014 | 144 |
| 2015 | 160 |
| 2016 | 132 |
| 2017 | 142 |
| 2018 | 93 |
| 2019 | 111 |
| 2020 | 73 |
| 2021 | 40 |
| 2022 | 17 |
| 2023 | 10 |
| 2024 | 7 |