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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1975 | 5 |
| 1976 | 10 |
| 1977 | 10 |
| 1978 | 16 |
| 1979 | 34 |
| 1980 | 26 |
| 1981 | 32 |
| 1982 | 45 |
| 1983 | 58 |
| 1984 | 82 |
| 1985 | 92 |
| 1986 | 92 |
| 1987 | 93 |
| 1988 | 87 |
| 1989 | 74 |
| 1990 | 63 |
| 1991 | 30 |
| 1992 | 78 |
| 1993 | 111 |
| 1994 | 130 |
| 1995 | 128 |
| 1996 | 103 |
| 1997 | 126 |
| 1998 | 154 |
| 1999 | 135 |
| 2000 | 133 |
| 2001 | 125 |
| 2002 | 131 |
| 2003 | 155 |
| 2004 | 142 |
| 2005 | 145 |
| 2006 | 175 |
| 2007 | 178 |
| 2008 | 201 |
| 2009 | 173 |
| 2010 | 211 |
| 2011 | 209 |
| 2012 | 186 |
| 2013 | 131 |
| 2014 | 169 |
| 2015 | 149 |
| 2016 | 136 |
| 2017 | 142 |
| 2018 | 154 |
| 2019 | 118 |
| 2020 | 104 |
| 2021 | 49 |
| 2022 | 18 |
| 2023 | 17 |
| 2024 | 9 |