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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 1 |
| 1971 | 1 |
| 1979 | 32 |
| 1980 | 52 |
| 1981 | 59 |
| 1982 | 30 |
| 1983 | 45 |
| 1984 | 48 |
| 1985 | 48 |
| 1986 | 43 |
| 1987 | 45 |
| 1988 | 74 |
| 1989 | 126 |
| 1990 | 128 |
| 1991 | 144 |
| 1992 | 191 |
| 1993 | 178 |
| 1994 | 201 |
| 1995 | 205 |
| 1996 | 158 |
| 1997 | 146 |
| 1998 | 130 |
| 1999 | 89 |
| 2000 | 121 |
| 2001 | 99 |
| 2002 | 69 |
| 2003 | 86 |
| 2004 | 85 |
| 2005 | 54 |
| 2006 | 51 |
| 2007 | 50 |
| 2008 | 56 |
| 2009 | 55 |
| 2010 | 35 |
| 2011 | 34 |
| 2012 | 34 |
| 2013 | 45 |
| 2014 | 37 |
| 2015 | 29 |
| 2016 | 29 |
| 2017 | 15 |
| 2018 | 16 |
| 2019 | 12 |
| 2020 | 21 |
| 2021 | 20 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 2 |