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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1981 | 1 |
| 1984 | 3 |
| 1985 | 3 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 45 |
| 1989 | 81 |
| 1990 | 69 |
| 1991 | 81 |
| 1992 | 87 |
| 1993 | 77 |
| 1994 | 100 |
| 1995 | 105 |
| 1996 | 85 |
| 1997 | 73 |
| 1998 | 72 |
| 1999 | 93 |
| 2000 | 108 |
| 2001 | 109 |
| 2002 | 124 |
| 2003 | 170 |
| 2004 | 131 |
| 2005 | 145 |
| 2006 | 164 |
| 2007 | 161 |
| 2008 | 229 |
| 2009 | 217 |
| 2010 | 233 |
| 2011 | 249 |
| 2012 | 253 |
| 2013 | 254 |
| 2014 | 259 |
| 2015 | 230 |
| 2016 | 218 |
| 2017 | 196 |
| 2018 | 204 |
| 2019 | 219 |
| 2020 | 174 |
| 2021 | 62 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 1 |