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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 10 |
| 1979 | 21 |
| 1980 | 40 |
| 1981 | 57 |
| 1982 | 142 |
| 1983 | 96 |
| 1984 | 44 |
| 1985 | 69 |
| 1986 | 76 |
| 1987 | 56 |
| 1988 | 66 |
| 1989 | 81 |
| 1990 | 116 |
| 1991 | 105 |
| 1992 | 102 |
| 1993 | 90 |
| 1994 | 91 |
| 1995 | 166 |
| 1996 | 119 |
| 1997 | 137 |
| 1998 | 147 |
| 1999 | 128 |
| 2000 | 105 |
| 2001 | 85 |
| 2002 | 106 |
| 2003 | 137 |
| 2004 | 99 |
| 2005 | 106 |
| 2006 | 121 |
| 2007 | 142 |
| 2008 | 92 |
| 2009 | 113 |
| 2010 | 94 |
| 2011 | 152 |
| 2012 | 141 |
| 2013 | 192 |
| 2014 | 149 |
| 2015 | 154 |
| 2016 | 128 |
| 2017 | 152 |
| 2018 | 154 |
| 2019 | 141 |
| 2020 | 130 |
| 2021 | 58 |
| 2022 | 15 |
| 2023 | 4 |
| 2024 | 2 |