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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 2 |
| 1969 | 1 |
| 1970 | 5 |
| 1971 | 12 |
| 1972 | 128 |
| 1973 | 188 |
| 1974 | 253 |
| 1975 | 247 |
| 1976 | 252 |
| 1977 | 258 |
| 1978 | 265 |
| 1979 | 261 |
| 1980 | 279 |
| 1981 | 256 |
| 1982 | 296 |
| 1983 | 243 |
| 1984 | 273 |
| 1985 | 283 |
| 1986 | 253 |
| 1987 | 190 |
| 1988 | 207 |
| 1989 | 224 |
| 1990 | 253 |
| 1991 | 235 |
| 1992 | 219 |
| 1993 | 209 |
| 1994 | 215 |
| 1995 | 239 |
| 1996 | 215 |
| 1997 | 244 |
| 1998 | 221 |
| 1999 | 219 |
| 2000 | 201 |
| 2001 | 199 |
| 2002 | 196 |
| 2003 | 211 |
| 2004 | 172 |
| 2005 | 178 |
| 2006 | 184 |
| 2007 | 161 |
| 2008 | 185 |
| 2009 | 159 |
| 2010 | 158 |
| 2011 | 167 |
| 2012 | 185 |
| 2013 | 175 |
| 2014 | 149 |
| 2015 | 146 |
| 2016 | 114 |
| 2017 | 107 |
| 2018 | 117 |
| 2019 | 95 |
| 2020 | 105 |
| 2021 | 57 |
| 2022 | 31 |
| 2023 | 16 |
| 2024 | 5 |