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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1975 | 7 |
| 1976 | 11 |
| 1977 | 46 |
| 1978 | 106 |
| 1979 | 89 |
| 1980 | 73 |
| 1981 | 58 |
| 1982 | 62 |
| 1983 | 93 |
| 1984 | 85 |
| 1985 | 84 |
| 1986 | 86 |
| 1987 | 93 |
| 1988 | 90 |
| 1989 | 114 |
| 1990 | 133 |
| 1991 | 131 |
| 1992 | 143 |
| 1993 | 140 |
| 1994 | 102 |
| 1995 | 148 |
| 1996 | 129 |
| 1997 | 119 |
| 1998 | 99 |
| 1999 | 112 |
| 2000 | 119 |
| 2001 | 119 |
| 2002 | 127 |
| 2003 | 117 |
| 2004 | 127 |
| 2005 | 176 |
| 2006 | 134 |
| 2007 | 151 |
| 2008 | 162 |
| 2009 | 156 |
| 2010 | 157 |
| 2011 | 157 |
| 2012 | 132 |
| 2013 | 158 |
| 2014 | 103 |
| 2015 | 79 |
| 2016 | 61 |
| 2017 | 59 |
| 2018 | 46 |
| 2019 | 62 |
| 2020 | 44 |
| 2021 | 12 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 1 |