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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 3 |
| 1970 | 3 |
| 1971 | 2 |
| 1972 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1980 | 2 |
| 1988 | 1 |
| 1989 | 3 |
| 1990 | 19 |
| 1991 | 14 |
| 1992 | 34 |
| 1993 | 36 |
| 1994 | 38 |
| 1995 | 43 |
| 1996 | 44 |
| 1997 | 37 |
| 1998 | 45 |
| 1999 | 73 |
| 2000 | 79 |
| 2001 | 117 |
| 2002 | 126 |
| 2003 | 147 |
| 2004 | 147 |
| 2005 | 182 |
| 2006 | 237 |
| 2007 | 229 |
| 2008 | 202 |
| 2009 | 199 |
| 2010 | 235 |
| 2011 | 224 |
| 2012 | 247 |
| 2013 | 255 |
| 2014 | 240 |
| 2015 | 280 |
| 2016 | 226 |
| 2017 | 203 |
| 2018 | 227 |
| 2019 | 268 |
| 2020 | 187 |
| 2021 | 115 |
| 2022 | 15 |
| 2023 | 28 |
| 2024 | 223 |
| 2025 | 115 |