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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1973 | 2 |
| 1974 | 4 |
| 1975 | 27 |
| 1976 | 42 |
| 1977 | 41 |
| 1978 | 51 |
| 1979 | 61 |
| 1980 | 71 |
| 1981 | 41 |
| 1982 | 54 |
| 1983 | 62 |
| 1984 | 97 |
| 1985 | 81 |
| 1986 | 93 |
| 1987 | 74 |
| 1988 | 65 |
| 1989 | 81 |
| 1990 | 107 |
| 1991 | 88 |
| 1992 | 92 |
| 1993 | 74 |
| 1994 | 75 |
| 1995 | 77 |
| 1996 | 66 |
| 1997 | 80 |
| 1998 | 92 |
| 1999 | 82 |
| 2000 | 115 |
| 2001 | 109 |
| 2002 | 126 |
| 2003 | 123 |
| 2004 | 141 |
| 2005 | 148 |
| 2006 | 165 |
| 2007 | 177 |
| 2008 | 196 |
| 2009 | 177 |
| 2010 | 201 |
| 2011 | 211 |
| 2012 | 241 |
| 2013 | 226 |
| 2014 | 199 |
| 2015 | 212 |
| 2016 | 234 |
| 2017 | 233 |
| 2018 | 225 |
| 2019 | 188 |
| 2020 | 213 |
| 2021 | 153 |
| 2022 | 141 |
| 2023 | 131 |
| 2024 | 43 |