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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1980 | 1 |
| 1981 | 3 |
| 1982 | 8 |
| 1983 | 5 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 1 |
| 1991 | 1 |
| 1992 | 3 |
| 1993 | 1 |
| 1996 | 1 |
| 1997 | 2 |
| 1998 | 12 |
| 1999 | 16 |
| 2000 | 18 |
| 2001 | 37 |
| 2002 | 34 |
| 2003 | 51 |
| 2004 | 72 |
| 2005 | 59 |
| 2006 | 69 |
| 2007 | 70 |
| 2008 | 79 |
| 2009 | 81 |
| 2010 | 107 |
| 2011 | 118 |
| 2012 | 133 |
| 2013 | 111 |
| 2014 | 139 |
| 2015 | 215 |
| 2016 | 188 |
| 2017 | 180 |
| 2018 | 184 |
| 2019 | 236 |
| 2020 | 246 |
| 2021 | 232 |
| 2022 | 228 |
| 2023 | 103 |