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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 2 |
| 1971 | 2 |
| 1972 | 2 |
| 1973 | 4 |
| 1974 | 81 |
| 1975 | 118 |
| 1976 | 123 |
| 1977 | 140 |
| 1978 | 122 |
| 1979 | 127 |
| 1980 | 122 |
| 1981 | 95 |
| 1982 | 111 |
| 1983 | 120 |
| 1984 | 126 |
| 1985 | 122 |
| 1986 | 149 |
| 1987 | 162 |
| 1988 | 186 |
| 1989 | 187 |
| 1990 | 221 |
| 1991 | 218 |
| 1992 | 234 |
| 1993 | 223 |
| 1994 | 230 |
| 1995 | 235 |
| 1996 | 210 |
| 1997 | 191 |
| 1998 | 178 |
| 1999 | 158 |
| 2000 | 161 |
| 2001 | 164 |
| 2002 | 165 |
| 2003 | 167 |
| 2004 | 178 |
| 2005 | 143 |
| 2006 | 175 |
| 2007 | 192 |
| 2008 | 184 |
| 2009 | 165 |
| 2010 | 156 |
| 2011 | 147 |
| 2012 | 172 |
| 2013 | 145 |
| 2014 | 157 |
| 2015 | 178 |
| 2016 | 140 |
| 2017 | 159 |
| 2018 | 123 |
| 2019 | 113 |
| 2020 | 88 |
| 2021 | 77 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 3 |