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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 2 |
| 1967 | 1 |
| 1971 | 3 |
| 1973 | 3 |
| 1974 | 16 |
| 1975 | 85 |
| 1976 | 98 |
| 1977 | 74 |
| 1978 | 118 |
| 1979 | 163 |
| 1980 | 168 |
| 1981 | 156 |
| 1982 | 152 |
| 1983 | 145 |
| 1984 | 173 |
| 1985 | 200 |
| 1986 | 168 |
| 1987 | 184 |
| 1988 | 196 |
| 1989 | 224 |
| 1990 | 246 |
| 1991 | 227 |
| 1992 | 176 |
| 1993 | 98 |
| 1994 | 75 |
| 1995 | 109 |
| 1996 | 97 |
| 1997 | 88 |
| 1998 | 95 |
| 1999 | 86 |
| 2000 | 101 |
| 2001 | 103 |
| 2002 | 81 |
| 2003 | 102 |
| 2004 | 68 |
| 2005 | 74 |
| 2006 | 73 |
| 2007 | 73 |
| 2008 | 73 |
| 2009 | 92 |
| 2010 | 79 |
| 2011 | 89 |
| 2012 | 84 |
| 2013 | 84 |
| 2014 | 97 |
| 2015 | 65 |
| 2016 | 50 |
| 2017 | 51 |
| 2018 | 54 |
| 2019 | 40 |
| 2020 | 35 |
| 2021 | 18 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 13 |