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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1978 | 1 |
| 1988 | 8 |
| 1989 | 30 |
| 1990 | 61 |
| 1991 | 39 |
| 1992 | 28 |
| 1993 | 27 |
| 1994 | 17 |
| 1995 | 24 |
| 1996 | 13 |
| 1997 | 13 |
| 1998 | 51 |
| 1999 | 104 |
| 2000 | 126 |
| 2001 | 114 |
| 2002 | 104 |
| 2003 | 104 |
| 2004 | 97 |
| 2005 | 142 |
| 2006 | 170 |
| 2007 | 210 |
| 2008 | 235 |
| 2009 | 207 |
| 2010 | 174 |
| 2011 | 172 |
| 2012 | 192 |
| 2013 | 157 |
| 2014 | 148 |
| 2015 | 188 |
| 2016 | 183 |
| 2017 | 199 |
| 2018 | 158 |
| 2019 | 127 |
| 2020 | 143 |
| 2021 | 127 |
| 2022 | 14 |
| 2024 | 1 |