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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1965 | 2 |
| 1972 | 1 |
| 1973 | 3 |
| 1974 | 13 |
| 1975 | 4 |
| 1977 | 17 |
| 1978 | 87 |
| 1979 | 101 |
| 1980 | 175 |
| 1981 | 201 |
| 1982 | 169 |
| 1983 | 136 |
| 1984 | 115 |
| 1985 | 91 |
| 1986 | 129 |
| 1987 | 153 |
| 1988 | 117 |
| 1989 | 143 |
| 1990 | 152 |
| 1991 | 157 |
| 1992 | 127 |
| 1993 | 139 |
| 1994 | 184 |
| 1995 | 132 |
| 1996 | 191 |
| 1997 | 148 |
| 1998 | 86 |
| 1999 | 87 |
| 2000 | 99 |
| 2001 | 115 |
| 2002 | 109 |
| 2003 | 119 |
| 2004 | 125 |
| 2005 | 48 |
| 2006 | 86 |
| 2007 | 90 |
| 2008 | 67 |
| 2009 | 68 |
| 2010 | 54 |
| 2011 | 49 |
| 2012 | 54 |
| 2013 | 53 |
| 2014 | 50 |
| 2015 | 26 |
| 2016 | 18 |
| 2017 | 42 |
| 2018 | 24 |
| 2019 | 25 |
| 2020 | 32 |
| 2021 | 20 |
| 2024 | 0 |