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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 1 |
| 1975 | 14 |
| 1976 | 10 |
| 1977 | 18 |
| 1978 | 33 |
| 1979 | 29 |
| 1980 | 34 |
| 1981 | 34 |
| 1982 | 42 |
| 1983 | 32 |
| 1984 | 27 |
| 1985 | 44 |
| 1986 | 43 |
| 1987 | 29 |
| 1988 | 32 |
| 1989 | 45 |
| 1990 | 49 |
| 1991 | 53 |
| 1992 | 49 |
| 1993 | 70 |
| 1994 | 77 |
| 1995 | 87 |
| 1996 | 81 |
| 1997 | 75 |
| 1998 | 98 |
| 1999 | 115 |
| 2000 | 121 |
| 2001 | 125 |
| 2002 | 127 |
| 2003 | 135 |
| 2004 | 137 |
| 2005 | 160 |
| 2006 | 179 |
| 2007 | 140 |
| 2008 | 185 |
| 2009 | 168 |
| 2010 | 156 |
| 2011 | 166 |
| 2012 | 193 |
| 2013 | 175 |
| 2014 | 175 |
| 2015 | 175 |
| 2016 | 169 |
| 2017 | 147 |
| 2018 | 142 |
| 2019 | 157 |
| 2020 | 109 |
| 2021 | 43 |
| 2022 | 13 |
| 2023 | 6 |
| 2024 | 8 |