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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1974 | 1 |
| 1978 | 8 |
| 1979 | 34 |
| 1980 | 54 |
| 1981 | 56 |
| 1982 | 93 |
| 1983 | 110 |
| 1984 | 140 |
| 1985 | 167 |
| 1986 | 177 |
| 1987 | 209 |
| 1988 | 134 |
| 1989 | 146 |
| 1990 | 200 |
| 1991 | 214 |
| 1992 | 167 |
| 1993 | 188 |
| 1994 | 158 |
| 1995 | 129 |
| 1996 | 95 |
| 1997 | 84 |
| 1998 | 91 |
| 1999 | 88 |
| 2000 | 91 |
| 2001 | 68 |
| 2002 | 89 |
| 2003 | 79 |
| 2004 | 80 |
| 2005 | 71 |
| 2006 | 75 |
| 2007 | 111 |
| 2008 | 104 |
| 2009 | 95 |
| 2010 | 121 |
| 2011 | 128 |
| 2012 | 110 |
| 2013 | 95 |
| 2014 | 97 |
| 2015 | 97 |
| 2016 | 67 |
| 2017 | 76 |
| 2018 | 60 |
| 2019 | 53 |
| 2020 | 41 |
| 2021 | 20 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 19 |
| 2025 | 7 |