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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1972 | 1 |
| 1988 | 12 |
| 1989 | 35 |
| 1990 | 28 |
| 1991 | 25 |
| 1992 | 50 |
| 1993 | 49 |
| 1994 | 39 |
| 1995 | 48 |
| 1996 | 39 |
| 1997 | 41 |
| 1998 | 55 |
| 1999 | 45 |
| 2000 | 59 |
| 2001 | 76 |
| 2002 | 84 |
| 2003 | 77 |
| 2004 | 110 |
| 2005 | 127 |
| 2006 | 154 |
| 2007 | 175 |
| 2008 | 167 |
| 2009 | 179 |
| 2010 | 175 |
| 2011 | 233 |
| 2012 | 263 |
| 2013 | 242 |
| 2014 | 238 |
| 2015 | 245 |
| 2016 | 208 |
| 2017 | 226 |
| 2018 | 241 |
| 2019 | 191 |
| 2020 | 190 |
| 2021 | 143 |
| 2022 | 23 |
| 2023 | 13 |
| 2024 | 7 |