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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 2 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 3 |
| 1986 | 3 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 9 |
| 1990 | 6 |
| 1991 | 4 |
| 1992 | 2 |
| 1993 | 2 |
| 1994 | 3 |
| 1995 | 2 |
| 1996 | 13 |
| 1997 | 12 |
| 1998 | 12 |
| 1999 | 19 |
| 2000 | 11 |
| 2001 | 21 |
| 2002 | 17 |
| 2003 | 30 |
| 2004 | 51 |
| 2005 | 54 |
| 2006 | 65 |
| 2007 | 60 |
| 2008 | 69 |
| 2009 | 70 |
| 2010 | 84 |
| 2011 | 107 |
| 2012 | 141 |
| 2013 | 144 |
| 2014 | 154 |
| 2015 | 134 |
| 2016 | 124 |
| 2017 | 117 |
| 2018 | 130 |
| 2019 | 149 |
| 2020 | 182 |
| 2021 | 191 |
| 2022 | 173 |
| 2023 | 166 |
| 2024 | 138 |