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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1973 | 2 |
| 1974 | 7 |
| 1975 | 41 |
| 1976 | 29 |
| 1977 | 36 |
| 1978 | 20 |
| 1979 | 24 |
| 1980 | 40 |
| 1981 | 67 |
| 1982 | 67 |
| 1983 | 56 |
| 1984 | 58 |
| 1985 | 51 |
| 1986 | 71 |
| 1987 | 71 |
| 1988 | 57 |
| 1989 | 64 |
| 1990 | 80 |
| 1991 | 78 |
| 1992 | 69 |
| 1993 | 92 |
| 1994 | 73 |
| 1995 | 74 |
| 1996 | 70 |
| 1997 | 73 |
| 1998 | 93 |
| 1999 | 103 |
| 2000 | 137 |
| 2001 | 167 |
| 2002 | 238 |
| 2003 | 288 |
| 2004 | 288 |
| 2005 | 210 |
| 2006 | 170 |
| 2007 | 150 |
| 2008 | 152 |
| 2009 | 136 |
| 2010 | 141 |
| 2011 | 142 |
| 2012 | 131 |
| 2013 | 138 |
| 2014 | 114 |
| 2015 | 120 |
| 2016 | 111 |
| 2017 | 91 |
| 2018 | 55 |
| 2019 | 32 |
| 2020 | 27 |
| 2021 | 25 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 32 |